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

8-121.
1. Multiple Choice: Which line below is perpendicular to the line 2x − 5y = 3? Homework Help ✎

1. 2x + 5y = 7

2. −2x + 5y = 4

3. 5x − 2y = −1

4. 5x + 2y = 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.

2x − 5y = 3

−5y = −2x = 3

$y=\frac{2}{5}x+\frac{3}{5}$

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

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

Solve for y.

Solve for y.

Solve for y.

Solve for y.

Correct!