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HSF.IF.A.2 Tutor Intake — Evaluate and Interpret Function Notation

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Grade 9·13 problems·~15 min·Common Core Math - HS Functions·group·hsf-if-a-2

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Concepts

Let $g(x) = x^2 - 1$ . Suppose $g(a) = g(-a)$ for some value $a$ .

What does this tell you?

$a$ and $-a$ are always equal.

The two inputs $a$ and $-a$ produce the same output value.

$g$ is not a function because two inputs map to one output.

$a$ must equal zero.