A superhero has been called to rescue the planet from destruction. He leaves from a point on the equator and flies along the equator at 60,000 m/min. at the same time his partner flies from thee same location in the opposite direction at 4415 km/h. Please explain why...

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 .