Question

Which of the following lines has a slope of -1/2?

x + 2y = 0
-x + 2y = 0
x - 2y = 0

Answer 1

The answer is: x + 2y = 0

Answer 2

x + 2y = 0

Explanation:

x + 2y = 0

2y = -x

y = -1/2x

y = mx + b m: slope

m = - 1/2