Are these two problems proportional or non-proportional? Why or why not? Explain your reasoning below. y=3/4x
y=1/2x-6

To solve the system of equations below, pedro isolated the variable y in the first equation and then substituted it into the second equation. what was the resulting equation? { 5y=10x {x^2+y^2=36

What is the total surface area of this square pyramid?

1: 4 if the wew 35 surfboards at the beach how many were short boards?