### Home > AC > Chapter 8 > Lesson 8.1.1 > Problem8-9

8-9.

For each line below, name the slope and $y$-intercept.

1. $y=\frac{-1+4x}{2}$

This equation, rewritten, is the same as saying:

$y=\frac{4}{2}x-\frac{1}{2}$

Knowing this information, can you identify the $y$-intercept and the slope?

$\text{Slope}=\frac{4}{2}=2 \ \ \ \ \ \ \ y\text{-intercept}=-\frac{1}{2}$

1. $3x+y=-7$

Rewrite the equation in $y=mx+b$ form, then identify the slope and the $y$-intercept.

1. $y=\frac{-2}{3}x+8$

The equation is already in $y=mx$ + b form, so identify the slope and $y$-intercept in the equation.

1. $y=-2$

Remember that $y=−2$ is a horizontal line.

Because it is horizontal, the line has zero slope and the $y$-intercept is given right in the equation, $−2$.