Question

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


x = 7
x = -4
x = 4
x = -7

Answer 1

Remember the axis goes through the vertex and is a vertical line so; x=4

Answer 2

y=a(x-h)^2+k
axis of symmetry is x=h
the axis of symmetry is 4

Answer 3

the equation for axis of symmetry is x = -b/2a

Answer 4

in the standard form y = ax^2 + bx + c

Answer 5

yours is in vertex form

Answer 6

so it makes it easier

Answer 7

I awarded study and mridrik medals for posting good general solutions.

Answer 8

thanks