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Is $y = x^2 – 4x + 7$ a quadratic function?

1 Answer

Jul 7, 2015

Yes

Explanation:

Any equation in the form or which can be re-arranged into the form:
$color(white)("XXXX")$ $y =ax^2+bx+c$ with constants $a, b, c$
is a quadratic function (basically by definition).

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