Question

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

A. x + 2y = 0
B. x - 2y = 0
C.-x + 2y = 0

Answer 1

A. x + 2y = 0

Step 1: Minus x from both sides. New equation looks like 2y = -x

Step 2: Divide both sides by 2.
Final equation looks like y = -1/2x
This equation is in slope-intercept format and the number in front if x in this format is always the slope.