find the x-intercept of the parabola with vertex (4 -1) and y-intercept (0 15) write your answer in this form (x1,y1) , (x2,y2)
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The y intercept given allows you this relation:
x-intercept of the parabola:
x-4=-1 or x-4=1
x=3 or x=5
so x-intercept are (3, 0) and (5, 0)
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