If you apply the changes below to the linear parent function ,f(x)=x what is the equation of the new function? vertically stretch by a factor of 14 flip over the y-axis?

is this correct?

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 .

Which simplifys to a+ b? a-(1-b)+1 -(1-a)-b+1 (a--1) -1)+1

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?