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Answer:
y = 1/3x - 2
Step-by-step explanation:
Perpendicular lines have slopes that are negative reciprocals of one another
so slope is 1/3
then y = 1/3x + b
Using (3,-1) => -1 = 1/3(3) + b
-1 = 1 + b
b = -2
so y = 1/3x -2