Answer:
7/5
Step-by-step explanation:
Perpendicular lines multiply to -1. Let m be the slope of the line perpendicular to the line with the slope of -5/7
-5/7 * m = -1
Multiply each side by -7/5 to get m alone
-7/5 * -5/7 *m = -1 * -7/5
m = 7/5
The slope of the line that is perpendicular to -5/7 is 7/5
