Iam not sure how do this i'll give brainiest however answers correctly first!

points (0,4) (6,2)

slope (y2-y1)/(x2-x1)

m = (2-4)/(6-0)

m=-2/6

m=-1/3

-1/3

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.