Ok, I am pretty much out of ideas, throwing up a hail mary looking for some help here, lol.
General equation of a parabola is x(y)=ay^2+by+c, i need x(0)=10 and x(5)=0.
So C must equal 10, and b=-2-5a. So the equation is now x(y)=ay^2-(2+5a)y+10.
Now, from here i must somehow derive the...