Say it ain’t soo oh woah~ (what’s the song btw)

23 - 13 + 8 (80/4)

In the coordinate plan (-6,9) b (3,9) c (3,3) def is shown in the coordinate plan below

Solve |2x - 5| = 4 if anyone could , that would be great

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 .