DailyDesmos 141A

Now substitute a=x and h=y

Interesting, Desmos won't graph those equations. I guess I will have to simplify them myself.

Clicking on their intersection point, verifies the values I had above.

Finally, we can create a general case where we are given two coordinate points and (0,0)

Showing the lines above will have an intersection of (A, h_1) Those values can also be solved algebraically.