Find the slope of the line that contains (3, −6) and (−1, −9)

An architect is designing a water fountain for a park she uses the given function to model the water jet flowing from the fountain nozzles where h(x) gives the height of the water jugs in feet x feet from the starting point h(x)=-1/20x+x+15

What are the equivalent ratios for 24/2= /3= /5.5=108/ = /15

It says factor each expression 49x-28?