y=
Include no spaces in your answer.

y=2x

Step-by-step explanation:

Graph it on a sheet of paper. Plot the points, check going from one point to another rise over run. Or just do rise over run with the points in the data table. You usually check where the line hits the y-axis for the b part of y-mx+b. However, this one crosses at 0 so there is no need to add it.

a. 12.5 kg

step-by-step explanation:

f = ma

so

m = f/a = (2500 n)/(200 m/s²) = 12.5 kg

1 n = 1 kg·m/s²