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STatiana [176]
3 years ago
12

Find the equation of the para bola that has zeros of x = -2 and x = 3 and a y-intercept of (0,-30)

Mathematics
1 answer:
lana [24]3 years ago
7 0

Answer:

y = 5x^2-5x-30

Step-by-step explanation:

A parabola with x-intercepts at (-2,0) and (3,0) has the equation

y = a(x+2)(x-3)

where a is to be determined.

We know that it passes through the point (0,-30), so

-30 = a(0+2)(0-3) = -6a

Therefore solve for a to get

a = 5

y = 5(x+2)(x-3)

y = 5(x^2-x+6)

y = 5x^2-5x-30

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