Algebra Examples

$f (x) = 8 x^{2} - 9$

Step 1

Write $f (x) = 8 x^{2} - 9$ as an equation.

$y = 8 x^{2} - 9$

Step 2

A function is said to be injective or one-to-one if every y-value has only one corresponding x-value.

Not injective (Not One-to-One)

Step 3