### Home > AC > Chapter 8 > Lesson 8.3.3 > Problem8-121

8-121.

Multiple Choice: Which line below is perpendicular to the line $2x-5y=3$?

Two lines are perpendicular if their slopes are negative reciprocals.

Put each equation, including the one in the problem, into slope intercept form.

Solve for $y$.

$\begin{array}{l} 2x - 5y = 3 \\ \quad \; \, - 5y = 3 \\ \qquad \; \; \, y = \frac{2}{5}x + \frac{3}{5} \end{array}$

$m=\frac{2}{5}$

For a perpendicular line, $m=-\frac{5}{2}$.

Solve for $y$.

1. $2x+5y=7$

1. $-2x+5y=4$

1. $5x-2y=-1$

1. $5x+2y=3$

Correct!