Question 68472
When the graph intersects an axis, the coordinate of the intersection is called an intercept
For x - intercept, the graph intersect the x-axis at point (x, 0) so you will substitute y = 0 to the given equation.

For y - intercept, the graph intersect the y-axis at point (0, y) so you will substitute x = 0 to the given equation.

I hope that helps. :)