Find the Range f(x)=x^2-8x-4

$f (x) = x^{2} - 8 x - 4$

Step 1

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

Interval Notation:

$[- 20, \infty)$

Set-Builder Notation:

${y | y \geq - 20}$

Step 2