If your looking for the X intercept, Always make the Y to a zero..

So the problem should look like this.

X- 2*0=4

2*0=0

x-0=4

add zero to 4 which makes

x=4

the intercept would be 4,0

okay I am pretty sure I am right, but If I am not please don't get mad!

if you need anymore help you can e-mail me at [email protected] or come back on here.