The x-intercept is found by solving the equation for y=0. Doing that, we get ...
0 = x+1 . . . . .put 0 where y is in the equation
-1 = x . . . . . . subtract 1 from both sides
Then the x-intercept is ...
(x, y) = (-1, 0) . . . . . . corresponds to the second selection
