Is the line that passes through $(-4,2)$ and $(-1,-7)$ perpendicular to the line $3 x-9 y=18$ ?

Name: Is the line that passes through $(-4,2)$ and $(-1,-7)$ perpendicular to the line $3 x-9 y=18$ ?
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Question

Quizplus · Accepted Answer

The slope of the given line is 5/3. The slope of the line perpendicular to it is -3/5. The slope of the line passing through (-4,2) and (-1,-7) is -9/3 = -3. Therefore, the line passing through (-4,2) and (-1,-7) is perpendicular to the line 3x-9y=18.

Is the Line That Passes Through (−4,2)(-4,2)(−4,2) And (−1,−7)(-1,-7)(−1,−7) Perpendicular to the Line

Is the Line That Passes Through $(-4,2)$ And $(-1,-7)$ Perpendicular to the Line