The axis of symmetry for a function in the form f(x) = x2 + 4x − 5 is x = −2. what are the coordinates of the vertex of the graph? (−9, −2) (−17, −2) (−2, −17) (−2, −9)

ANSWER

The vertex is (-2,-9)

EXPLANATION

The given function is:

If the axis of symmetry of this vertical parabola is x=-2, then it means the x-value of the vertex is x=-2.

To find the y-value of the vertex, we substitute x=-2 into the function to obtain;

We simplify to get,

Hence the vertex is (-2,-9)

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