The height of an arch is modeled by the equation y=-x^2-6x+16. Which of the following gives the width of the arch at its base?

the y-coordinate of the vertex

double the x-coordinate of the vertex

the y-intercept of the equation

the difference between the zeroes

Question

10 September, 21:34

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Answers (1)

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Trey Wagner · Answer 1

The center of the arch is units

from the roots, so

and

so, the x-coordinate of the arch's center is

and

The peak of the arch is at (-3,16)

The height of an arch is modeled by the equation y=-x^2-6x+16. Which of the following gives the width of the arch at its base?the y-coordinate of the vertexdouble the x-coordinate of the vertexthe y-intercept of the equationthe difference between the zeroes