SOLUTION: Solve the system of equations below using elimination by addition. What are the solutions? -2x+2y=1 18x-18y=-8

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons  -> Linear Equations Lesson -> SOLUTION: Solve the system of equations below using elimination by addition. What are the solutions? -2x+2y=1 18x-18y=-8      Log On


   

Question 1181675: Solve the system of equations below using elimination by addition.
What are the solutions?
-2x+2y=1
18x-18y=-8
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
multiply the top by 9
-18x+18y=9
18x-18y=-8
0=-1
no solution.
Write in slope intercept form
2y=-2x+1 and y =x+(1/2) slope 1
18y=18x+8 and y=x+(4/9) slope 1
both lines have same slope, so they are parallel and don't intersect.