Key to Practice Midterm I

1.  (.5,4]

2.  x = 1

3.  First is a hyperbola, second is an parabola.

(these aren't shown here)

4.  A.  Hyperbola

B.  Line

C.  Ellipse

D.  Hyperbola

5.  x²/9 + y² = 1

6. A.  24 feet.

B.  1.58 seconds