Graph and solution please!

y=2.50x+4.00

over here the gradient is 2.50

and the y-intercept is 4.00

so in the first one, start Drawing the line from 4 on y axis

So a few points would be: (0,4) (1,6.5) (2,9) (3,11.5) (4,14)

second equation...

y=2.00x+5.00

gradient is 2.00

and y intercept is 5

so draw the line from 5 on the y axis

A few points would be: (0,5) (1,7) (2,9) (3,11) (4,13)

As you see, I got the common point (2,9) in both, so they intersect at (2,9)

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.