Exercises -
In Exercises, find parametric equations for the given curve.
1. y = 9 - 4x
2. y = 8x2 - 3x
3. 4x - y2 = 5
4. (x + 9)2 + (y - 4)2 = 49
5. x2 + y2 = 49
6. (x/5)2 + (y/12)2 = 1
7. Line of slope 8 through (-4, 9).
8. Line through (2, 5) perpendicular to y = 3x.
9. Line through (3, 1) and (-5, 4).
10. Line through (1/3, 1/6) and (- 7/6, 5/3).
11. Segment joining (1, 1) and (2, 3).
12. Segment joining (-3, 0) and (0, 4).
13. Circle of radius 4 with center (3, 9).
14. Ellipse of Exercise 6, with its center translated to (7, 4).
15. y = x2, translated so that the minimum occurs at (-4, -8).
16. y = cos x, translated so that a maximum occurs at (3, 5).