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ACTM.124 Average Rate of Change
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The graph of y = E(x) is shown. Which statement correctly interprets the average rate of change from x = 2 to x = 10?
A
(E(2) + E(10))/2 = 12; on average, E(x) is 12 output units per input unit
B
(E(2) - E(10))/(10 - 2) = 3/2; on average, E(x) increases by 3/2 output units for each 1 input unit increase
C
(E(10) - E(2))/(10 + 2) = -1; on average, E(x) decreases by 1 output units for each 1 input unit increase
D
(E(10) - E(2))/(10 - 2) = -3/2; on average, E(x) decreases by 3/2 output units for each 1 input unit increase
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