## What you’ll learn to do: Identify and use slope when solving applications

As we’ve been graphing linear equations, we’ve seen that some lines slant up as they go from left to right and some lines slant down. Some lines are very steep and some lines are flatter. What determines whether a line slants up or down, and if its slant is steep or flat?

The steepness of the slant of a line is called the slope of the line. The concept of slope has many applications in the real world. The pitch of a roof and the grade of a highway or wheelchair ramp are just some examples in which you literally see slopes. And when you ride a bicycle, you feel the slope as you pump uphill or coast downhill.

Before you get started in this module, try a few practice problems and review prior concepts.

1)

If you missed this problem, review the following video.

2)

3)

If you missed either of these problems, review the video below.

4)

If you missed this problem, review this example.

Which of the following fractions are equivalent to $\Large\frac{7}{-8}?$

$\Large\frac{-7}{-8},\frac{-7}{8},\frac{7}{8},-\frac{7}{8}$