If the x-intercepts of a quadratic function are (-4,0) and (4, 0), what is the x-coordinate of the vertex?

9514 1404 393

  0

Step-by-step explanation:

When two points on a parabola have the same y-value, the line of symmetry is halfway between them. The vertex is on the line of symmetry. Its x-coordinate is ...

  (-4 +4)/2 = 0

The x-coordinate of the vertex is 0.

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The graph shows 3 different parabolas with those x-intercepts. They all have vertices with an x-coordinate of 0.

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step-by-step explanation:

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b. x + 1

step-by-step explanation:

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