Every x and y coordinate is different. The y-coordinates don't have the same x-coordinate, so the function passes the vertical line test. This function is called a discrete function since it's made up of individual points, not a line or curve.
When you draw a diagonal line from Y to W, you will create two congruent triangles.
Each of these triangles will have three sides of different lengths, making them scalene triangles.
In each of these triangles, there will be one 90° angle, right angle, and two acute angles (less than 90°). This would classify these triangles as right triangles based on the angles.
