Andrea is travelling by bus at an average speed of 85km/h The equation relating distance,d and time t, is d= 85t

Ian works part-time at a movie theatre. He
earns $8.25/h. The relationship between his
pay, p, and the time he works, t, can be
modelled with the equation p = 8.25t.
a) Show the relationship on a graph.
b) Explain how you know the graph
represents the equation.