Understanding Derivatives and Average Rate of Change

The video tutorial explains how to find a point c in a given interval where the derivative of a function equals the average rate of change over that interval. The function f(x) = x^2 - 6x + 8 is used as an example. The process involves setting up the interval, calculating the derivative, and solving for c. The solution is verified by graphing the function and checking the slope of the tangent line at c.

What is the function f(x) defined as in the video?

• x squared minus 8x plus 6

• x squared minus 6x plus 8

• x squared plus 8x minus 6

• x squared plus 6x minus 8

What is the interval over which the function is analyzed?

• [1, 4]

• [3, 6]

• [0, 3]

• [2, 5]

Tags

CCSS.8.F.B.4

CCSS.HSF.IF.B.6

What is the average rate of change of the function over the interval [2, 5]?

• 0

• 1

• 3

• 2

What is the derivative of the function f(x)?

• x - 6

• 2x - 6

• 2x + 6

• x + 6

Tags

CCSS.8.F.B.4

CCSS.HSF.IF.B.6

At what x-value is the derivative equal to the average rate of change?

• 7/2

• 3

• 5

• 4

Tags

CCSS.HSF-IF.C.7E

What does the graph of the function intersect at x = 2?

• x-axis

• Origin

• None of the above

• y-axis

What is the vertex of the function's graph?

• (3, -1)

• (2, 0)

• (4, 0)

• (5, 3)

What is the significance of the point c = 7/2 in the context of the video?

• It is the maximum point of the function.

• It is where the derivative equals the average rate of change.

• It is the minimum point of the function.

• It is where the function is undefined.

What does the tangent line at c = 7/2 represent?

• The maximum slope of the function

• The minimum slope of the function

• A line parallel to the secant line

• A line perpendicular to the secant line

What is the final conclusion about the value of c?

• c is not in the interval

• c is equal to 7/2

• c is equal to 5

• c is equal to 2