The linear regression tool also provides the equation that represents the best-fit line. A linear equation is always of the form y=Ax+B, where A is the slope of the line, and B is the y-intercept. In this case, the variable in the y direction is position, and the variable in the x direction is time, so the linear regression equation looks like: position = A * time + B Whenever we get an equation from data, we need to put units on all the numbers, otherwise the equations are meaningless! (think - 32 miles per hour would be very different than 32 miles per second!) Think about what the units should be for the numbers in your equation (A and B). What are the units for A, the slope of this line