Answer:
y = 1/3x + 6
Step-by-step explanation:
Format the given line into slope-intercept form:
y = -3x + 5
Perpendicular lines have a reversed sign and reciprocal slope:
y = 1/3x + b
Plug in the points:
3 = (-9) * 1/3 + b
3 = -3 + b
b = 6
Plug in b:
y = 1/3x + 6