Pls help me solve this problem

Complete the standard form of the equation that represents the quadratic relationship displayed above, where a, b, and c are rational numbers.

50 points and will mark brainlest if you were constructing a triangular frame, and you had wood in the length of 4inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood? yes or no? = explain your mathematical thinking:

:)i need to know on which ones are corresponding, alternate interior, alternate exterior, or none of these.