Y-4x = 8 y = 2 (2x + 4)

IF y-4x=8y=2 (2x+4)

then y-8y=4x+2 (2x+4)

y-8y=4x+4x+8

-7y=8x+8

y = (-8x-8) / 7

x = (-7y-8) / 8

IF y-4x=8 and y=2 (2x+4)

then a) y=4x+8 and b) y=4x+8 so we have infinite answer

I'm assuming the two equations are:

y - 4x = 8

and

y = 2 (2x+4)

So the first equation can be rewritten as:

y = 4x + 8

The second equation, we can distribute the 2 to get:

y = 4x + 8

Thus we see that both equations are identical, which means there are an infinite number of solutions.