What function is a quadratic function?

A.y=1/y
B.y=5x-7
C.y=-x2+2y
D.y=|x|
Is the answer C?? Thank you

1 answer

a quadratic function involves x^2
So, (C) is a quadratic.

Surely you could have discovered that information
(a) in your text
(b) via google
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