1. The problem statement, all variables and given/known data 2. Relevant equations Rate of change formula: y2-y1/x2-y2 3. The attempt at a solution If this is a rate of change problem so I use the rate of change formula: y2-y1/x2-y2 and since it's from 2 to 4 I think that would be (2,0) (4,0) and thus (0-0)/(4-2) = 0/2 = 0 I don't think this is right. What am I doing wrong?