The slope of a line is -5/4. What is the slope of line that is parallel to it?
The slope of a line is -5/4. What is the slope of line that is perpendicular to it?
+1253 Parallel lines always have the same slope. In this case, it's -5/4.
Perpendicular lines multiply to -1. In this case, it's 4/5. Note that a simple way to get 4/5 is to reverse -5/4 to -4/5, then multiply by -1 and get rid of the negative sign.
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