How many solutions does this system have?

x-2y=2
y= -2x+5
a. infinitely many solutions
b. no solutions
c. two solutions
d. one solution ******

7 answers

How many solutions does this system have?
x-2y=2
y= -2x+5
a. infinitely many solutions ***
b. no solutions
c. two solutions
d. one solution
2y = x - 2
2y =-4x+ 10
different slopes so cross once, agree with you
Wrong the answer is one solution!!! I swear it
It is one solution. I got it wrong choosing infinitely many.
That is all
Parallel lines - infinitely many solutions
Parallel line have the same slope

Perpendicular lines - one solution
Perpendicular lines have different slopes

seems what thats was confusin yall.
I still don't understand could someone please explain how you figure out if they are perpendicular or parallel