2x-y+4=0... what are you actually trying to find?
2x+y = 10 or y = -2x + 10 so the slope is -2
y = -2x+5 Slope: -2 Intercept: 5
y=2x y-2x=0 or 2x-y=0
14
0
2x-y+4=0... what are you actually trying to find?
2x+y = 10 or y = -2x + 10 so the slope is -2
y = -2x+5 Slope: -2 Intercept: 5
Which means 0 = -1!
parallel
y=(2x)2 y=2(2x) y=4x
y=2x y-2x=0 or 2x-y=0
14
y = 2x
-3
8