### Home > CCA2 > Chapter Ch10 > Lesson 10.2.2 > Problem10-132

10-132.

The graph of $f(x) = x^2 - 3x - 4$ is shown at right. Use the graph to solve:

1. $f(x) = 0$

Think of $f(x)$ as $y$.

2. $f(x) ≥ 0$

$x ≤ -1$ or $x ≥ 4$

3. $f(x) ≤ 0$