What is th rate of change?

Question

If f(x) changes by 5 when x changes by 2 what is the rate of change in cost per game bowled?

Answer 1

f(x) [output or y] changes by 5 as x [input] changes by 2

Therefore, your rate of change for this relation is:

change in output (y)/change in input (x) = 5/2

So, in cost per game bowled, your rate of change is (assuming cost is in dollars): $5 for every 2 games bowled, or $2.50 for every game.