Question

Determine whether there is a good line of best fit for the given graph. Then, if there is a good line of best fit, determine if the correlation is

positive or negative.

Answer 1

The line's slope equals the difference between points' y-coordinates divided by the difference between their x-coordinates. Select any two points on the line of best fit. These points may or may not be actual scatter points on the graph. Subtract the first point's y-coordinate from the second point's y-coordinate.