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Multiple Choice
Suppose the average rate of change of between and is . Which statement must be true?
A
=
B
<
C
>
D
is constant for all
Verified step by step guidance
1
Step 1: Recall the formula for the average rate of change of a function g(x) between two points x = a and x = b. It is given by: .
Step 2: Substitute the given values x = 4 and x = 7 into the formula. The average rate of change becomes: .
Step 3: The problem states that the average rate of change is 0. Set the formula equal to 0: = 0.
Step 4: Multiply through by the denominator (7 - 4 = 3) to eliminate the fraction. This gives: .
Step 5: Solve for g(7) and g(4). Rearrange the equation to find: . This means the function g(x) has the same value at x = 4 and x = 7, which implies g(x) is constant between these points.