Answer:
y = 1/3 * x + 8
Step-by-step explanation:
y = -3x + 10
slope: -3
A line perpendicular to another has a slope that is the negative reciprocal of the slope of the other line
slope' : 1/3
y=mx + b
5 = 1/3 * (-9) + b
b = 8
Perpendicular line: y = 1/3 * x + 8
