You can put this solution on YOUR website!
The of a line is the at which the line the .
The of the point where a line intersects the x-axis is .
So, the of a line can also be found by substituting in the equation of the line.
so, in your case it will be:
.....substitute ........answer: is at (4,0)
your equation in slope-intercept form
and here is a graph