as you already know, we start off by doing a quick switcheroo on the variables, and then we solve for y to get the inverse,
and if you run a vertical line test on that expression, you'll find that it doesn't pass it, meaning is not a function.
The y intercept is at 2 and the x intercept is at 3
2/5 will be shaded in the original how I got it s that you make a rectangle and make fifths inside and shade in 3/5 of that and see what matches up on the top.