Answer:
4x^2-7x+3
Step-by-step explanation:
(4x-3)(x-1)
4x^2-4x-3x+3
4x^2-7x+3
You would have to share a picture or the details of this triangle in order for me to help
Assume your line starts at zero, your first point is (-3,5) meaning your have a slope of 5/-3
[ f(x) = 5/-3x + b]