Question

What is the slope of a line perpendicular to the line -3x + 6y = -15?

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Answer 1

The slope of a line perpendicular to the line -3x + 6y = -15 is 2

Answer 2

slope of a line perpendicular to the line -3x + 6y = -15 is -2

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