How do you find the axis of symmetry of the quadratic equation $y = 2(x + 7)^2 – 4$ ?

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Answer 1 · 2016-08-06T22:10:31

x = -7

y is in the vertex form.
x-coordinate of the vertex, and the axis of symmetry, is
x = -7

How do you find the axis of symmetry of the quadratic equation y = 2(x + 7)^2 – 4y = 2(x + 7)^2 – 4?