Question

Use the substitution method to solve the following system of equations.

x+y=3
2x+2y=10

I think the answer is no solutions

Answer 1

you are right , these are parallel lines

Answer 2

I think you are correct.

Answer 3

y=-x+3 , y=-x+5

Answer 4

sub y = 3-x in second equn.
2x + 2(3-x) = 10
2x -2x + 6 = 10
6 - 10

parallel lines
there are infinite solutions

Answer 5

jimmy is right, of course :)