If δtoy≅δstu, then what corresponding side is congruent to side us? (enter your answer using the segment letters only.)

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 .

Witch represents the inverse of the function f(x)=1/4x-12

Which table shows a proportional relationship between miles traveled and gas used?