All points on the x-axis are like (2,0), (-4,0), (7,0), etc. They all have their y-coordinates as 0. x-intercepts are all on the x-axis, so to find them, we let y=0. All points on the y-axis are like (0,3), (0,-5), (0,6), etc. They all have their x-coordinates as 0. y-intercepts are all on the y-axis, so to find them, we let x=0. Edwin