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Exercises Graphs and straight lines

Example 11.37 from Prealgebra, 11.4 Understand Slope of a Line

Understand Slope of a Line: example 11.37

Find the slope of each line:

ⓐ $x = 8$
ⓑ $y = −5$

Work it out on paper first. Then open the solution one step at a time, and stop as soon as you can finish on your own.

Solution
ⓐ $x = 8$
This is a vertical line, so its slope is undefined.

ⓑ $y = −5$
This is a horizontal line, so its slope is $0 .$

Your turn

The book's Try It right after this example: same idea, new numbers. Only the answer is given.

Find the slope of the line: $x = −4 .$

How did it go?

PreviousUnderstand Slope of a Line: example 11.34 Next Understand Slope of a Line: example 11.38

From Prealgebra (1st edition) by OpenStax (Rice University), section 11.4, licensed under CC BY 4.0. Original at openstax.org. We split the solution into steps; the words, numbers and figures are the book's. OpenStax doesn't endorse this site.