# How do you decide whether the graphs of the two equations are parallel lines: #y=2x-1, y=-2x+1#?

##### 2 Answers

Dec 5, 2016

#### Answer:

Both lines are expressed in slope intercept form

To be parallel they would have to have the same slope. This is not the case so they are not parallel.

#### Explanation:

More in detail if the two lines

were parallel, then

But:

and it is also obvious that the two lines cross for