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In Mathematics / Middle School | 2014-06-11

The graph of [tex]y = -5x^2 + 9[/tex] passes through (1, 2a) in the standard (x, y) coordinate plane. What is the value of [tex]a[/tex]?

F. 2
G. 4
H. 7
J. -1
K. -8

Asked by Yolande952

Answer (2)

y = − 5 x 2 + 9 ( 1 ; 2 a ) → f or x = 1 ; y = 2 a f or x = 1 y = − 5 ⋅ 1 2 + 9 = − 5 + 9 = 4 2 a = 4 / : 2 a = 2 A n s w er : F .

Answered by Anonymous | 2024-06-10

The value of a that satisfies the equation is 2. This was found by substituting x = 1 into the given equation to find y , which we set equal to 2 a . The selected answer is F. 2.
;

Answered by Anonymous | 2024-12-17

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