Precalculus Examples

$x = - 4$

Step 1

The domain is the set of all valid $x$ values.

${x | x = - 4}$

Step 2

The range is the set of all valid $y$ values. Use the graph to find the range.

Interval Notation:

$(- \infty, \infty)$

Set-Builder Notation:

${y | y \in ℝ}$

Step 3

Determine the domain and range.

Domain: ${x | x = - 4}$

Range: $(- \infty, \infty), {y | y \in ℝ}$

Step 4