MarxZelonis719 MarxZelonis719

09-06-2015
Mathematics

contestada

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

Respuesta :

lulu1991 lulu1991

20-06-2015

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.

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