Can someone write out the answer and explain this?

[shut helm]

Acceleration is the derivative (i.e. slope of the tangent) of the speed

Since this is already a line, you can read off what its slope is right away

[smoky wren]

Get a point of time and just do the formula of acceleration, (v1-v0) / t

Since Speed (y) = f( Time (x) ) or y = f(x)

[shut helm]

(i.e. the formula of the slope of a line; (y2 - y1)/(x2 - x1))

[smoky wren]

so its relative