You may want to review solving linear equations first.

The intercepts of a line are where it crosses the *x*-
and *y*-axes. Lines usually have two intercepts,
the *x*-intercept and the *y*-intercept. You find
the *x*-intercept by substituting 0 into the equation
wherever you see a *y*. Now you have an equation that you can
solve for *x*. To find the *y*-intercept, it's the other
way around; you put 0 in for *x* and then solve
for *y*.

For example, suppose you had to find the intercepts of the
equation 2*x* + 3*y* = 6. To find
the *x*-intercept, you put 0 in for *y*, which makes the
equation 2*x* = 6. The solution of this is *x* = 3, so 3
is the *x*-intercept; this means the line goes through the
point (3, 0). To find the *y*-intercept, you put in 0
for *x*, which makes the equation 3*y* = 6. Now the
solution is *y* = 2, so 2 is the *y*-intercept; this
means the line goes through (0, 2).

Note that intercepts are always *numbers*; they can't have
letters in them. Also, if one of the equations is an identity or a
contradiction, then that intercept doesn't really make sense. On
this website, you should indicate that by leaving it blank. (You
still need to compute the other intercept, though!)