Awell known standard iq test produces normally distributed results with a mean of 100 and a standard deviation of 15. what percent of the population have an iq between 91 and 109?

Which of the following lines is not parallel to the graph of y = 4x +7?

The graph of a line gets what as the value of the slope gets bigger

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 .