5x+y= 50
y= 5x
4x-2y=10
y= -1/3x -5
y= -2x +20
4x-y= 13
y= 4
3x+y= 28
8x+y+3=0
y= -x -1
m= -2 b= 20
m= -1 b= -1
m= 4 b= -13
m=0 b= 4
m= -4/-2 b= -10/2
m= -8 b= -3
m=-5 b=50
m= 5 b= 0
m= -1/3 b= -5
m= -3 b= 28
