1. What is the x-intercept of the line with equation 2x + 3y = 12? A. 4 B. 3 C. 6 D. 2 Hint 2. What is the y-intercept of the line with equation 4x - 5 y = 20? A. 4 B. 5 C. -5 D. -4 Hint 3. Which is an equation of the line with x-intercept 2 and y-intercept -4? A. B. C. y = -2x - 4 D. y = 2x - 4 Hint 4. Which is an equation of the line parallel to y = 6x - 4 and passing through (-3, -8)? A. y = 6x - 8 B. C. D. y = 6x + 10 Hint 5. OBCD is a square. What are the coordinates of D? A. (0, 0) B. (a, 2a) C. (0, a) D. (a, a) Hint 6. is equilateral. What are the coordinates of A? A. (-2b, 0) B. C. D. Hint 7. Find the magnitude of to the nearest tenth. A. 21.0 units B. 5.4 units C. 29.0 units D. 4.6 units Hint 8. The vertices for are T(-4,4), U(0,10) and V(4,4). X and Y are the midpoints of and , respectively. Find the coordinates of the point of intersection of the medians and A. (1,4) B. (0,6) C. (0,8) D. (-1,5) Hint 9. Using the points (2,5) and (10,20) find the equation of the best-fit line for the scatter plot. A. B. C. D. Hint 10. If = (0,4) and = (-1,6), and = 2 -3, find . A. (3,10) B. (0,10) C. (3,-10) D. (-3,26) Hint 11. Find the midpoint of the line with endpoints of (-4, -2, 4) and (3, 7, 2). A. (-4, 2, 3) B. (-3.5, -4.5, 1) C. (-0.5, 2.5, 3) D. (-1, 4, 2) Hint 12. Find the coordinates of the center of the sphere that has a diameter with endpoints at (-2,-7,6) and (6,12,15). A. (4,9.5,4.5) B. (2,2.5,10.5) C. (2,2.5,10) D. (4,4.5,7) Hint