Mathematics: If a parabola has x-intercepts at 13 and -21, what is the x-coordinate of its vertex

If a parabola has x-intercepts at 13 and -21,

ling95

18.03.2021

-4

Step-by-step explanation:

To find the x-coordinate of the vertex of a parabola given its x-intercepts, find the average of the x-intercepts:

x-coordinate of the vertex = $\frac{x_1+x_2}{2}$ (where x_1 and x_2 are the x-intercepts)

Plug in the x-intercepts 13 and -21

$\frac{13+(-21)}{2}\\= \frac{13-21}{2}\\= \frac{-8}{2}\\=-4$

Therefore, the x-coordinate of the vertex is -4.

I hope this helps!

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breannaasmith1122

03.09.2021

yeah its annoying

Step-by-step explanation:

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