Question

Which of the following is the equation of the axis of symmetry of the quadratic equation y = 2(x + 7)2 – 4?

a. x=4
b. x=7
c. x=-4
d. x=-7

Answer 1

In this form, the axis of symmetry is at x=-7

Answer 2

maybe explain to him how to find the axis?

Answer 3

Sure

Answer 4

With quadratic in the form of:
\[a(x-h)+k\]
The vertex is at (h,k) and the axis of symmetry is at x=h.
In this case, h=-7

Answer 5

square the x-h****

Answer 6

\[a(x-h)^2+k\]

Answer 7

:) thanks

Answer 8

thanks