Question

Substitution problems..and how to graph and their solutions

2) y+2x=1
when y=3x+6
(x ,y )

3) y=x+10
when y=-2x
(x ,y )

4) y= -x+9
when y= -3x
(x ,y )

Answer 1

Sub in y=3x+6 in y+2x=1

3x+6 +2x=1

Answer 2

1x= -5?

Answer 3

i am confused with this.. how do I find the x? y? the solution?

Answer 4

There's no equal sign in the middle, why is it 1x = -5?