X and Y intercepts are a very easy thing to find on a graph, and that essentially all that they are, they are defined as the points on a graph where the line crosses over the X or Y axes. NOTE: on the x intercept y will always equal to 0 and on the y intercept x will always equal to 0.

For the question above it asks you to determine the value of the y intercept based on the equation y= x-5. To do this all you need to do is replace the x with 0 as we know that on the y intercept x will always equal to 0. Then all you are left with is y= -5