What is 3 over 4 + b = 3

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 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 .

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?