The graph of a proportional relationship contains the point (8, 4) . What is the corresponding equation?The graph shows a proportional relationship between the number of kilometers traveled (y) and the number of minutes spent traveling (x).

What is the unit rate, expressed in kilometers per minute?

0.25 km/min

0.40 km/min

1.50 km/min

2.50 km/min
graph with x-axis labeled as time in minutes. y axis is labeled a distance traveled in kilometer. a line starts at the origin 0 comma 0 and goes through the point 57 comma 30.