### Home > PC3 > Chapter 4 > Lesson 4.2.3 > Problem4-96

4-96.

Graph $y=(x-1)(x+3)$. For what values of $x$ is $y\le0$? Express your answer as an inequality (example: $x>2$, $1\le x\le4$). Was the factored form of the equation easy to graph? Do you see a connection between the equation, the factors, and the solution to the inequality?

The $x$-intercepts occur at the values of $x$ that make each factor $0$.
The $y$-intercept occurs when $x=0$.