The slope of a line is 1/3. What is the slope of a line perpendicular to this line?
1 answer:
A perpendicular line has a negative reciprocal of a given line.
The given slope is 1/3, the reciprocal of this would be 3/1, which simplifies to 3.
The negative of 3 is -3.
The answer is a) -3.
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