I don't have a problem solving these problems but i cant seem to find the equation(s) of this problem. A right triangle is formed in the first quadrant by the x and y axes and a line through the point (1,2). a0Write the length L of the hypotenuse as a function of x.

the second part asks for me to find the minimum length but i can do that on my own. I can't find the equations for it. I believe the primary is L^2= x^2+y^2 but i cant determine the secondary one to sub in for y. I appreciate any help.