SOLUTION: is the equations y=-2x+7 and y=-2x-6 parallel or perpendicular?

Question 188940: is the equations y=-2x+7 and y=-2x-6 parallel or perpendicular?

Answer by jojo14344(1513) (Show Source): You can put this solution on YOUR website!

Given:

Just by looking on the eqns, they are parallel.

Why? Remember Parallel Lines have the same Slope=m, ---> y=mx+b

We can prove by solving the eqns.

In EQN 1:
Let fy=0 ----> ----> ---->
, X-Intercept
Let fx=0 ---->
, Y-Intercept

In EQN 2:
Let fy=0 ---> ---> ---->
, X-Intercept
Let fx=0 --->

We'll see the graph,
---> RED, EQN 1; GREEN, EQN 2

Thank you,
Jojo

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