SOLUTION: The instructions are decide whether the graphs of the two equations are parallel lines. How do i figure this out without graphing? Ex: y = 2x - 1, y = -2x + 1

Algebra ->  Graphs -> SOLUTION: The instructions are decide whether the graphs of the two equations are parallel lines. How do i figure this out without graphing? Ex: y = 2x - 1, y = -2x + 1      Log On


   



Question 372182: The instructions are decide whether the graphs of the two equations are parallel lines. How do i figure this out without graphing?
Ex: y = 2x - 1, y = -2x + 1

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Both eqns are in slope-intercept form, y = mx + b
m is the slope.
If the two slopes are equal, they're parallel, o/w they're not.