Piggly takes 24 minutes to run 1 lap and Wiggly takes 36 minutes to run 1 lap. If they begin the race at the same time, how many minutes will it take for both pigs to be at the starting point again?

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 integer is 8 times another. if the product is 72, then find the integers

Which of these tables represents a non-linear function?