If two lines in the standard (x,y) coordinate plane are perpendicular, and the slope of one of the lines is 5/7, what is the slope of the other line ?
A.) 7/5 B.) 5/7 C.) 5/7 D.) 7/5 E.) 5
Perpendicular lines have slopes which are negative reciprocals of each other. For example: 3/4 and 4/3.
Parallel lines have equal slopes. If the slope of one of the perpendicular lines is 5/7, the slope of the other line would be 7/5. {the negative reciprocal of 5/7} A.) 7/5 Ask Algebra House Comments are closed.

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