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Which equation represents the axis of symmetry of the graph of the equation y = x2 + 4x - 5? (1) x = -2 (3) y = -2 (2) x = 4 (4) y = 4
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Which equation represents the axis of symmetry of the graph of the

equation y = x2 + 4x - 5?
(1) x = -2 (3) y = -2
(2) x = 4 (4) y = 4

User Zerok
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1 Answer

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The answer is (1) x=-2. The property of the equation like y=ax2+bx+c is that the axis of symmetry of the graph is x=-b/2a. So for this question, the axis is x=-4/2=-2.
User Astroboy
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