Phương trình nào sau đây là phương trình tham số của đường thẳng d:3x−2y+6=0?
A. x=3ty=2t+3.
B. x=ty=32t+3.
C. x=ty=−32t+3.
D. x=2ty=32t+3.
Đáp án và lời giải
Đáp án:B
Lời giải:Lời giải
d:3x−2y+6=0→x=0⇒y=3n→d=3;−2
→A0;3∈du→d=2;3=21;32→d:x=ty=3+32tt∈ℝ. Chọn B
Câu hỏi thuộc đề thi sau. Bạn có muốn thi thử?
Bài tập trắc nghiệm 15 phút Viết PTTS, PTCT của đường thẳng - Toán Học 10 - Đề số 3
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Một số câu hỏi khác cùng bài thi.
-
Đường thẳng d đi qua điểm M0;−2 và có vectơ chỉ phương u→=3;0 có phương trình tham số là:
-
Phương trình tham số của đường thẳng [d] đi qua M[–2;3] và có VTCP
=[1;–4] là: -
Đường thẳng d đi qua gốc tọa độ O và có vectơ chỉ phương u→=−1;2 có phương trình tham số là:
-
Cho d:x=2+3ty=5−4t . Điểm nào sau đây không thuộc d?
-
Viết phương trình tham số của đường thẳng đi qua
và có vectơ chỉ phương -
Phươngtrìnhthamsốcủađườngthẳngđiqua điểm
vànhậnlàmvectơchỉphươnglà -
Phương trình nào sau đây là phương trình tham số của đường thẳng d:3x−2y+6=0?
-
Trong mặt phẳng với hệ tọa độ
, cho tam giác ABC có A1;4 , B3;2 và C7;3. Viết phương trình tham số của đường trung tuyến CM của tam giác.
-
Đường thẳng đi qua hai điểm A3;−7 và B1;−7 có phương trình tham số là:
-
Phương trình nào sau đây là phương trình tham số của đường thẳng d:x−y+3=0 ?
Một số câu hỏi khác có thể bạn quan tâm.
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Read the following passage and mark the letter A,B ,C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks blanks:
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Question 7:
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Read the following passage and mark the letter A,B ,C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks blanks:
Teaching English as a foreign language can be a great way to travel the world and earn money at the same time. However, some graduates actually like the idea of [4] ............... a career in teaching English long-term, and there are numerous courses at various [5] ............... of teaching, from the fast-track TEFL to a diploma or masters. To find the right course a good place to start is TEFL.com – an Internet site with lots of relevant information and helpful advice, including a comprehensive list of institutions in the UK offering TEFL courses. The site also offers a job search facility to assist qualified students [6] ............... finding work. When deciding which course to take, the best bet is to look at what your needs are. If you want a career in teaching English then definitely find one designed for that [7] ..........., like an MA or diploma; but if you want to travel around the world, then do a shorter course which will supply you with teaching skills. Some countries, like Japan, will employ people without a teaching qualification as [8] ............. as the teacher is a native speaker of English. However, most countries do now expect a qualification.
Question 8:
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Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 24 to 28:
Rural America is diverse in many ways. As we have seen, no one industry dominates the rural economy no single pattern of population decline or growth exists for all rural areas, and no statement about improvements and gaps in well-being holds true for all rural people. Many of these differences are regional in nature. That is, rural areas within a particular geographic regionof the country often tend to be similar [24] _______ each other and different from areas in another region. Someindustries, for example, are [25] _______ with different regions-logging and sawmills in the Pacific Northwest andNew England, manufacturing in the Southeast and Midwest, and farming in the Great Plains. Persistent poverty also has a regional pattern, concentrated primarily in the Southeast. Other differences follow no regional pattern. Areas that rely heavily on the services industry are located throughout rural America, as are rural areas that have little access to advanced telecommunications services. Many of these differences, regional and non-regional arethe result of a [26] _______ of factors including the availability of natural [27] ______; distance from and access tomajor metropolitan areas and the information and services found there; transportation and shipping facilities; political history and structure; and the racial, ethnic, and [28] ______ makeup of the population.
Question 24:
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Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 24 to 28:
Rural America is diverse in many ways. As we have seen, no one industry dominates the rural economy no single pattern of population decline or growth exists for all rural areas, and no statement about improvements and gaps in well-being holds true for all rural people. Many of these differences are regional in nature. That is, rural areas within a particular geographic regionof the country often tend to be similar [24] _______ each other and different from areas in another region. Someindustries, for example, are [25] _______ with different regions-logging and sawmills in the Pacific Northwest andNew England, manufacturing in the Southeast and Midwest, and farming in the Great Plains. Persistent poverty also has a regional pattern, concentrated primarily in the Southeast. Other differences follow no regional pattern. Areas that rely heavily on the services industry are located throughout rural America, as are rural areas that have little access to advanced telecommunications services. Many of these differences, regional and non-regional arethe result of a [26] _______ of factors including the availability of natural [27] ______; distance from and access tomajor metropolitan areas and the information and services found there; transportation and shipping facilities; political history and structure; and the racial, ethnic, and [28] ______ makeup of the population.
Question 25:
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Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 15 to 19:
Fashions have always changed with time. No[15] ________ Roman girls worried about having the latest hairstyleand boys in Ancient Egypt wanted to have sandals that were cool and not the sensible ones their mothers preferred. Look[16] ________over recent times, there seem to be two main differences in the way fashions have changedcompared to earlier time. Firstly, [17] ________ morepeople have a choice of clothes available to them. Thereare few places in the world where the trainers, the caps or the T-shirts of teenagers do not change from one year to the next. Secondly, styles are [18] ________within a much shorter time than they usedto be. For instance, in the 1960s, [19] ________ had the same low waists and narrow skirts as forty years before. In the early years of the 21st century, the shops are full of long skirts and colored scarves like the ones in fashion only thirty years before. Soon, we will find that the really fashionable people look no different from the rest of us, because it is only ten years since their clothes were in fashion before!
Question 19:
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Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 15 to 19:
Fashions have always changed with time. No[15] ________ Roman girls worried about having the latest hairstyleand boys in Ancient Egypt wanted to have sandals that were cool and not the sensible ones their mothers preferred. Look[16] ________over recent times, there seem to be two main differences in the way fashions have changedcompared to earlier time. Firstly, [17] ________ morepeople have a choice of clothes available to them. Thereare few places in the world where the trainers, the caps or the T-shirts of teenagers do not change from one year to the next. Secondly, styles are [18] ________within a much shorter time than they usedto be. For instance, in the 1960s, [19] ________ had the same low waists and narrow skirts as forty years before. In the early years of the 21st century, the shops are full of long skirts and colored scarves like the ones in fashion only thirty years before. Soon, we will find that the really fashionable people look no different from the rest of us, because it is only ten years since their clothes were in fashion before!
Question 18:
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Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 15 to 19:
Fashions have always changed with time. No[15] ________ Roman girls worried about having the latest hairstyleand boys in Ancient Egypt wanted to have sandals that were cool and not the sensible ones their mothers preferred. Look[16] ________over recent times, there seem to be two main differences in the way fashions have changedcompared to earlier time. Firstly, [17] ________ morepeople have a choice of clothes available to them. Thereare few places in the world where the trainers, the caps or the T-shirts of teenagers do not change from one year to the next. Secondly, styles are [18] ________within a much shorter time than they usedto be. For instance, in the 1960s, [19] ________ had the same low waists and narrow skirts as forty years before. In the early years of the 21st century, the shops are full of long skirts and colored scarves like the ones in fashion only thirty years before. Soon, we will find that the really fashionable people look no different from the rest of us, because it is only ten years since their clothes were in fashion before!
Question 17:
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Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 15 to 19:
Fashions have always changed with time. No[15] ________ Roman girls worried about having the latest hairstyleand boys in Ancient Egypt wanted to have sandals that were cool and not the sensible ones their mothers preferred. Look[16] ________over recent times, there seem to be two main differences in the way fashions have changedcompared to earlier time. Firstly, [17] ________ morepeople have a choice of clothes available to them. Thereare few places in the world where the trainers, the caps or the T-shirts of teenagers do not change from one year to the next. Secondly, styles are [18] ________within a much shorter time than they usedto be. For instance, in the 1960s, [19] ________ had the same low waists and narrow skirts as forty years before. In the early years of the 21st century, the shops are full of long skirts and colored scarves like the ones in fashion only thirty years before. Soon, we will find that the really fashionable people look no different from the rest of us, because it is only ten years since their clothes were in fashion before!
Question 16:
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Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phases that best fits each of the numbered blanks from 34 to 38:
People have always dreamt of living forever. Although we all know this will never happen, we will want to live as long as possible. __[34]__, there are advantages and disadvantages of a long life.In the first place, people who live longer can spend more time with their family and friends. Secondly, __[35]__ have busy working lives look forward to a long, relaxing life, when they can do the things they‘ve never had time for. __[36]__, there are some serious disadvantages. Firstly, many people become ill and consequently have to spend time in hospital or become burden __[37]__ the children and friends. Many of them find this dependence annoying or embarrassing. In addition to this, __[38]__ the fewer friends they seem to have because old friends die or become and it’s often difficult to make new friends. To sum up, living to a very old age is worthwhile for those who stay healthy enough to remain independent and enjoy life.
Question 38:
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Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phases that best fits each of the numbered blanks from 34 to 38:
People have always dreamt of living forever. Although we all know this will never happen, we will want to live as long as possible. __[34]__, there are advantages and disadvantages of a long life.In the first place, people who live longer can spend more time with their family and friends. Secondly, __[35]__ have busy working lives look forward to a long, relaxing life, when they can do the things they‘ve never had time for. __[36]__, there are some serious disadvantages. Firstly, many people become ill and consequently have to spend time in hospital or become burden __[37]__ the children and friends. Many of them find this dependence annoying or embarrassing. In addition to this, __[38]__ the fewer friends they seem to have because old friends die or become and it’s often difficult to make new friends. To sum up, living to a very old age is worthwhile for those who stay healthy enough to remain independent and enjoy life.
Question 37: