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Question 17 of 32
If the vertex of a parabola is (2, -9) and another point on the curve is (5, -18),
what is the coefficient of the squared expression in the parabola's equation?
O A. -5
ОB. 5
O C. -1
O D. 1

Question 17 of 32 If the vertex of a parabola is 2 9 and another point on the curve is 5 18 what is the coefficient of the squared expression in the parabolas e class=

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Answer:

Step-by-step explanation:

Since you didn’t specify the type of parabola, I’ll assume it is vertical.

The vertex-form equation of the parabola is

y = a(x-2)² - 9

(5,-18) is a point on the parabola.

-18 = a(5-2)² - 9

-18 = a⋅3² - 9

a = -1

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