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

Question

wrightmassey · Answer

first you plug everything in to get 2a=-5 (1)^2+9 you do the powers and multiply 2a=-5 (1)+9 2a=-5+9 2a=4 a=2

wrightmassey · Answer

To find the value of a , we substituted x = 1 into the equation y = − 5 x 2 + 9 and determined the corresponding y value to be 4. By setting this equal to 2 a , we solved for a and found that a = 2 . 
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The graph of [tex]y = -5x^2 + 9[/tex] passes through [tex](1, 2a)[/tex] in the standard [tex](x, y)[/tex] coordinate plane. What is the value of [tex]a[/tex]?

Answer (2)

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