Precalculus Examples

given $f (x) = 3 x - 2$ ; find $f (- 6)$

Step 1

Replace the variable $x$ with $- 6$ in the expression.

$f (- 6) = 3 (- 6) - 2$

Step 2

Simplify $3 (- 6) - 2$ .

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Step 2.1

Remove parentheses.

$3 (- 6) - 2$

Step 2.2

Multiply $3$ by $- 6$ .

$- 18 - 2$

Step 2.3

Subtract $2$ from $- 18$ .

$- 20$