Answers to Math 151 WIR week2 sections 1.3-2.3

1.

2. The ellipse

3. vector representation: <3,1> + t<4,3>

parametric representation: x = 3 + 4t, y = 1 + 3t

4. The lines are perpendicular and intersect at .

5. -1

7.

8. a) 1/10 b) +∞ c)

9.

10. 5

11. DNE