Question

What is the axis of symmetry of the parabola given by the equation y = 3(x – 9)^2 – 12?
a. x = –9
b. x = 9
c. y = –9
d. y = 9

Answer 1

One minute. :)

Answer 2

b. x = 9

Answer 3

Just graph the equation, and then graph the line that splits the parabola into mirror images. :)

Answer 4

your equation has the vertex at (9, -12) so the line of symmetry is the x value in the vertex

Answer 5

Thanks (:

Answer 6

You're welcome. :)