May i have some with finding the slope in this graph?

The slope is always

             (the change in 'y')
divided by
             (the change in 'x') .

This line is so easy ... it crosses all the corners of the boxes,
so you have tons of choices of what 2 points to pick.
But let's just pick the ends of the line.

From the beginning to the end of the line:   

-- the change in 'y' is  4 meters

-- the change in 'x' is  40 seconds

Slope =  (the change in 'y')  divided by  (the change in 'x') .

           =       (4 meters)             /                (40 seconds)

           =         0.1 meter/second .

Cis the