Answer:
A line perpendicular to another has a slope that is the negative reciprocal of the slope of the other line. The negative reciprocal of the original line is –2, and is thus the slope of its perpendicular line.
Step-by-step explanation:
The slope is -4
-4
-4 is closer to the 0
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You use the slope formula, (y2-y1/x2-x1)
