Question
Determine whether each pair of lines is parallel, perpendicular, or neither. See Example 7.$$\begin{array}{l}y=\frac{1}{5} x+20 \\y=-\frac{1}{5} x\end{array}$$
Step 1
The slope of a line is the coefficient of x in the equation of the line. For the first line, $y=\frac{1}{5}x+20$, the slope is $\frac{1}{5}$. For the second line, $y=-\frac{1}{5}x$, the slope is $-\frac{1}{5}$. Show more…
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