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Which of the following is the equation of the axis of symmetry of the quadratic equation y = 2(x - 4)2 + 7?
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The answer is either 7, -4, 4,or -7
Hint: the standard form of a quadratic equation is \(y = a(x - h) + k\), where (h, k) coordinate pair is the vertex of the equation. The axis of symmetry is a vertical line, and the vertex lies on this line.
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