⭐Emily is observing the velocity of a cyclist at different times. After four hours, the velocity of the cyclist is 14 km/h. After 9 hours, the velocity of the cyclist is 4 km/h.⭐

Part A: Write an equation in 2 variables in the standard form that can be used to describe the velocity of the cyclist at different times. Show work and define variables used.

Part B: How can you graph the equations obtained in Part A for the first 10 hours?