Who knows how to do this pls

Tom travels between the two mile markers shown and then finds his average speed in miles per hour. select the three equations that represent this situation.

What is the slope of any line parallel to the line 8x+9y=3 in the standard (x,y) coordinate plane?

Michael gose to a theme park and rides two different roller coasters that both begin on a raised platform his height while on the first roller coaster measured in feet from the platform height can be modeled by the following graph where t is the number of seconds since the ride began