what is the axis of symmetry of x^2+7x+12=0

Question

what is the axis of symmetry of x^2+7x+12=0

Answer 1

The axis of symmetry of a quadratic equation is the vertical line that passes through the vertex. It can be found by x = (-b/2a). In this case b = 7, and a = 1, so the equation is x = -7/2 = -3 1/2.

Answer 2

Use the formula x=-b/2a to find the x coordinate of the vertex. This will also be the axis of symmetry.

x=-7/[(2)(1)]

x=-7/2