# Chapter 3 - Section 3.5 - Equations of Lines - Exercise Set: 36

-4

#### Work Step by Step

In order to find $f(-1)$, we must find the value of y at which $x=-1$. In other words, we must find the y-value on the graph of the line at $x=-1$. The y-value at $x=-1$ is -4, so $f(-1)=-4$.

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