Although there are many correct answers, for this WebAssign problem you must use exactly the given vector and point.
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1 Vector Lines: Basic ( ) Due: Mon Nov :01 AM MST Question Instructions Read today's Notes and Learning Goals. 1. Question Details vectors III DGB 0 [ ] A line is given in vector form: r(t) = r 0 + t v Which of the following is the direction vector for the line? r 0 v Which of the following represents a point on the line? r 0 v 2. Question Details vectors III DGB 1 [ ] A line is given in vector form: r(t)= 3, 2 + t 1, 5 Which of the following is the direction vector for the line? 3,2 1,5 Neither of these. Which of the following represents a point on the line? 3,2 1,5 Neither of these. 3. Question Details vectors III question 1 [ ] Write the vector form of the line parallel to v = 1, 2 and passing through the point P = ( 1,3). Write the equation in the form r(t)= x 0, y 0 + t a, b Although there are many correct answers, for this WebAssign problem you must use exactly the given vector and point. r(t)=
2 4. Question Details vectors III DGB WS 2 [ ] Download and complete Worksheet #2. If you are working in class get a copy from your instructor. Which of the following are correct direction vectors for the line? Select all that apply. 1,2 4,2 1, 2 4, 2 Which of the following represent points on the line? Select all that apply. 1,2 4,2 1, 2 4, 2 Which of the following are correct vector forms of the equation of the line? Select all that apply. 1,2 + t 4,2 1,1 + t 4,2 1,2 + t 4, 2 1,1 + t 4, 2 5. Question Details vectors III question 2 [ ] Which of the following vector equations correctly represent the line that is parallel to v = 1, 2, and that passes through the point (2,3)? Select all that apply. r(t) = 2,3 + t 1, 2 r(t) = 1, 2 + t 2, 3 r(t) = 2 + t, 3 2t r(t) = t, 2 r(t) = 2, 3 + t 2, 4
3 6. Question Details vectors III question 10 [ ] A line has vector form r(t) = t 2, 0 + 3, 5. Find the coordinate functions. x = 7. Question Details vectors III question 9 [ ] The coordinate functions of the line parametrized by: r(t) = 6t 1, 9t + 2. are: x(t) = The ycoordinate of the line, as a function of t, is: y(t) =
4 8. Question Details vectors III question 4 [ ] Suppose that the line r(t) = r 0 + v has coordinate functions x = 2t + 7 t 4 Which of these is the correct direction vector? 2, 1 2, 4 7, 1 7, 4 Which is of these represents a point on the line: 2, 1 2, 4 7, 1 7, 4 Write the vector equation of the line in the form r(t)= x 0, y 0 + t a, b using exactly the position and direction vectors you found above. r(t) = 9. Question Details vectors III question 5 [ ] Which of the following are correct vector equations for the line passing through the points (1, 1) and (3,6)? Select all that apply. r(t) = 1, 1 + t 3, 6 r(t) = 1, 1 + t 2, 7 r(t) = 3,6 + t 1, 1 r(t) = 3,6 + t 2, 7
5 10. Question Details vectors III question 5b [ ] Select the correct vector equation for the line passing through the points (1, 1) and (3,6), so that r(1) = 3,6. r(t) = 1, 1 + t 3, 6 r(t) = 1, 1 + t 2, 7 r(t) = 3,6 + t 1, 1 r(t) = 3,6 + t 2, 7 Find the coordinate functions for your choice. x = 11. Question Details vectors III question 5c [ ] Find the only vector equation for the line passing through the points (1, 1) and (3,6), so that r(0) = 3,6, and r(1) = 1, 1. Write your answer in the form r(t)= x 0, y 0 + t a, b r(t) = 12. Question Details vectors III question 6 [ ] Which of the following represent lines that pass through the origin? Select all that apply. r(t) = t 1, 5 r(t) = t 6, 1 2 r(t) = 2, 7 + t 3, 1 r(t) = 2, + t 4, none of the above.
6 13. Question Details vectors III question 7 [ ] Which of the following represent lines that are parallel to the line r(t) = 8, 2 + t 3, 1 Select all that apply. r(t) = 3t + 12, t 17 r(t) = 7 3t, 1 + t r(t) = 3t + 5, t+2 r(t) = 5t 3, 2t + 1 r(t) = 6t, 2t 14. Question Details vectors III question 12 [ ] There is only one vector equation for the line passing through the points (0,1) and (2, 1)), so that r(0) = 0,1, and r(1) = 2, 1. Find this vector equation. Then find its component functions: x = 15. Question Details vectors III WS3 [ ] Download and complete Worksheet #3. If you are working in class get a copy from your instructor. Compute the yintercept of the line you graphed.
7 16. Question Details vectors III question 16 [ ] A line is given in vector form by r(t) = t 2, 4 + 2, 5 What is the slope of the line? m = What is the yintercept of the line? b = What is the equation of the line in slopeintercept form, mx + b? 17. Question Details vectors III question 17 [ ] A line has vector equation r(t) = 3t 1, 5t + 4 What is the slope of the line? m = What is the yintercept of the line? b = What is the equation of the line in slopeintercept form, mx + b?
8 18. Question Details vectors III question 14 [ ] A particle is traveling along a straightline path in the plane. Its position at time t is given by: r(t) = 2, 4 + t 3, 6 At what time t will the particle pass through the point (2, 4)? t = At what time t will the particle pass through the point (5, 2)? t = What is the location R of the particle at time t = 10? R = A second particle is traveling along a different line given by s(t) = 1, 4 + t 2, 1 Find the values of the two parameters t r and t s in which the two lines intersect. Note: If the two paths intersect, the values of their parameters t r and t s need not be the same. If this particle's path intersects the path of the first particle (vector r) enter the values of the two parameters separated by a comma, otherwise enter 'none' if the particle's paths do not intersect. A third particle is following a line given by s(t) = 6t + 11, 12t + 1 If this particle's path intersects the path of the first particle (vector r) enter the values of the two parameters separated by a comma, otherwise enter 'none' if the particle's paths do not intersect. 19. Question Details vectors III question 18 [ ] Find a vector equation r(t) = r 0 + t v for the line with slopeintercept equation, 1. The line crosses the yaxis at t = v = 5 3 x + 2 4, that meets the following conditions: r(t) = Assignment Details
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