Renna pushed the button for the elevator to go up, but it would not move. The weight limit for the elevator is 450 kilograms, bu
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If a line's slope is 
, the slope of the perpendicular line is 
in this case, the given line has a slope 4, which is 4/1, so the perpendicular line has a slope/gradient
in this case, the given line has a slope 4, which is 4/1, so the perpendicular line has a slope/gradient