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Maths Exercices

Find the slope of perpendicular lines

Perpendicular lines have slopes that are opposite reciprocals, like and . The slopes also have a product of -1.

Line t has a slope of . Line u is parallel to line t. What is the slope of line u?

Simplify your answer and write it as a proper fraction, improper fraction, or integer.

Line u is perpendicular to line t, so its slope is the opposite reciprocal. Find the opposite reciprocal.

Take the slope of line t
Find the reciprocal
Find the opposite

The slope of line u is .

Line d has a slope of . Line q is perpendicular to line d. What is the slope of line q?
Simplify your answer and write it as a proper fraction or as a whole or mixed number.

Solution: