Line c has a slope of 7/9 .Line d is perpendicular to c.What is the slope of line d? Simplify your answer and write it as a proper fraction, improper fraction, or integer. _____

Perpendicular Lines: Line d is perpendicular to line c. Slopes of perpendicular lines are opposite reciprocals.Slope of line c: Slope of line c: 7/9 Reciprocal of 7/9: 9/7Reciprocal and Opposite: Opposite of 9/7: -9/7 Slope of line d: -9/7

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Line $c$ has a slope of $\frac{7}{9}$ . Line $d$ is perpendicular to $c$ . What is the slope of line $d$ ? $\newline$ Simplify your answer and write it as a proper fraction, improper fraction, or integer. $\newline$ $\_\_$

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Math Problems

Algebra 1

Slopes of parallel and perpendicular lines

Full solution

Q. Line

c

has a slope of

\frac{7}{9}

. Line

d

is perpendicular to

c

. What is the slope of line

d

\newline

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

\newline

\_\_

Perpendicular Lines: Line $d$ is perpendicular to line $c$ . Slopes of perpendicular lines are opposite reciprocals.
Slope of line c: Slope of line c is $\frac{7}{9}$ . And reciprocal of $\frac{7}{9}$ is $\frac{9}{7}$ .
Reciprocal and Opposite: Opposite of $\frac{9}{7}$ is $-\frac{9}{7}$ . $\newline$ So, slope of line $d$ will be $-\frac{9}{7}$ .