A wheelchair ramp with a length of 312 inches has a horizontal distance of 310 inches. What is the ramps vertical distance (height)?

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 .

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2

You buy 4 items that cost 2.69 14.45 8.05 13.95 what is the estimated total round to the nearest dollar