Ineed fast! this is 8th grade math

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 .

What is the best reason for jacinta to have a savings account in addition to a checking account

5. (03.02)if g(x) = x2 + 3, find g(4). (2 points)1619811