Question

To practice writing the equations of vertical parabolas, write the equations of these parabolas in vertex form:

focus at (-5, -3), and directrix y = -6
focus at (10, -4), and directrix y = 6.

Answer 1

-6=a(x-5)-3

6=a(x-10)-4

Explanation:

f(x)=a(x-h)+k