Question

Which function is a quadratic function?

a(x) = –2x3 + 2x – 6
b(x) = 5x3 + 8x2 + 3
c(x) = –8x2 + 3x – 5
d(x) = 6x4 + 2x – 3

Answer 1

The correct answer is: [C]: " c(x) = –8x² + 3x – 5 " .
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The quadratic function takes the form of:
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" f(x) = ax² + bx + c " .
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Answer choice: [C]: " c(x) = –8x² + 3x – 5 " ;

is the only answer choice provided that takes that form of the quadratic function:

" f(x) = ax² + bx + c " :

in which: " a = -8 " ; " b = 3 " ; " c = -5 " .
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