Question

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

x = 7

x = –4

x = 4

x = –7

Answer 1

in this case you have it in "vertex form" \(y=a(x-h)^2+k\) the vertex is \((h,k)\) and the axis of symmetry is \(x=h\)

Answer 2

in your example \(h=-7\)

Answer 3

nice, thankyou!