How do you use the point-slope form to predict the pounds of oranges produced by an 18 foot tree and a 20 foot tree?

This is the equation I am suppose to use to figure it out:
p-40=50/9(h-6)

Question

How do you use the point-slope form to predict the pounds of oranges produced by an 18 foot tree and a 20 foot tree?

This is the equation I am suppose to use to figure it out:
p-40=50/9(h-6)

campbell_st · Answer

why not rewrite the equation with p as the subject. 

This can be achieved by adding 40 to both sides of the equation..

then substitute h = 18  to get a prediction 

and repeat the process for = = 20