Answer:
slope of a line perpendicular to the line -3x + 6y = -15 is -2
Step-by-step explanation:
-3x + 6y = 15
solve for y,
y = 1/2 x + 15/6
slope of a line perpendicular is the "negative reciprocal" of the slope of the original line, thus
y = -2 x + b
