how do yu know which goes n the bottom is it rise/run

So the first point is (a, f(a)) = (2,5). When a = 5, the y-value on the curve is f(5) = (5) 265) +5 =25 10+5 = 20 So the second point is (a + h, f(a + h)) = (5, 20). The average rate of change is the slope between these points, _ f(a+h) f@) sec (a+h)a 20 (5) 5 (2) 15 ~ 3 =5 The average rate of change between x = 2 and x = 5 for the function f(z) is 5. In other words, the secant line