Help please.

The graph shows the rate at which paint is used to paint a wall. enter values to complete each statement below based on the graph. when 1 gallon of paint has been used, ( # ) square feet of the wall will be painted. the unit rate is ( # )square feet per gallon.

Find the equation using the point (4,8)

Aconstruction worker has rope 9 m long he needs to cut it in pieces that are each 3 /5 m long how many such pieces can he cut without having any rope leftover?