Question

the equation of a line that intercepts the x- axis at x=2 is?

Answer 1

What's the ordered pair of an x-intercept? (i.e. You know the x-coordinate of this point, but what is the y-coordinate of any point on the x-axis?)

Answer 2

x=2,y=0
or (2,0)

Answer 3

Yes (sorry for very late response).

Point slope form is
\[y-y_1=m(x-x_1)\] where m is the slope.
If you plug in your point for (x1,y1) and simplify you can get an equation for every line through (2,0). You can plug in any value for m and it will go through (2,0) -- try graphing some with different slopes once you get the equation, if you want to.