What is the value of (3x-2y)^2

Iam trying to solve a linear equation for the shoe size of someone 84" tall taking into consideration example 1 is 69" tall with a shoe size of 9 and example 2 is 72 inches tall with a shoe size of 11. i understand that the equation should be y=mx+b and that on the graph the answer is (3,2) but i just don't understand how to create the equation to solve for 84-inches and 60-inches tall questions. after two days, i need .

One positive integer is 2 less than another. the product of the two integers is 24. what are the integers?

Suppose that g(x)=f(x+9) which statement best compares the graph of g(x) with the graph of f(x)