Compute and display a 95% joint confidence region for the parameters associated with age and lph. Plot the origin on this display. The location of the origin on the display tell us the outcome of a certain hypothesis test. State that test and its outcome

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 .

In what form is the following linear equation written y=9x+2

The solution set for 5v2 – 125 = 0 is