The graph of a function is shown. y 800 400 20 40 60 (a) Find the average rate of change of f on the interval [50, 60].

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Chapter8: Graphing Quadratic Functions
Section: Chapter Questions
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Q7. Please answer all the parts to this question 

The graph of a function f is shown.
800
400
y
0
(c) Compute the following.
f(40) - f(0)
40 0
(a) Find the average rate of change of f on the interval [50, 60].
20
(b) Identify an interval on which the average rate of change of f is 0.
O [10, 50]
O [0, 80]
[0, 60]
O [10, 40]
O [20, 40]
O No
What does this value represent geometrically?
the slope of the tangent line at (20, f(20))
O the slope of the tangent line at (40, f(40))
(e) Is f'(10) > f'(30)?
Yes
(d) Estimate the value of f'(50).
40
the slope of the line segment from (0, f(0)) to (40, f(40))
O the slope of the tangent line at (0, f(0))
(f) Is f'(60) >
Yes
O No
60
X
f(80)-f(40) ?
80 40
Explain.
The slope of the tangent line at x = 40, f'(40), is less than the slope of the line passing through (60, f(60)) and (80, f(80)).
O The slope of the tangent line at x = 60, f'(60), is less than the slope of the line passing through (40, f(40)) and (80, f(80)).
O The slope of the tangent line at x = 80, f'(80), is greater than the slope of the line passing through (40, f(40)) and (60, f(60)).
The slope of the tangent line at x = 80, f'(80), is less than the slope of the line passing through (40, f(40)) and (60, f(60)).
O The slope of the tangent line at x = 60, f'(60), is greater than the slope of the line passing through (40, f(40)) and (80, f(80)).
Transcribed Image Text:The graph of a function f is shown. 800 400 y 0 (c) Compute the following. f(40) - f(0) 40 0 (a) Find the average rate of change of f on the interval [50, 60]. 20 (b) Identify an interval on which the average rate of change of f is 0. O [10, 50] O [0, 80] [0, 60] O [10, 40] O [20, 40] O No What does this value represent geometrically? the slope of the tangent line at (20, f(20)) O the slope of the tangent line at (40, f(40)) (e) Is f'(10) > f'(30)? Yes (d) Estimate the value of f'(50). 40 the slope of the line segment from (0, f(0)) to (40, f(40)) O the slope of the tangent line at (0, f(0)) (f) Is f'(60) > Yes O No 60 X f(80)-f(40) ? 80 40 Explain. The slope of the tangent line at x = 40, f'(40), is less than the slope of the line passing through (60, f(60)) and (80, f(80)). O The slope of the tangent line at x = 60, f'(60), is less than the slope of the line passing through (40, f(40)) and (80, f(80)). O The slope of the tangent line at x = 80, f'(80), is greater than the slope of the line passing through (40, f(40)) and (60, f(60)). The slope of the tangent line at x = 80, f'(80), is less than the slope of the line passing through (40, f(40)) and (60, f(60)). O The slope of the tangent line at x = 60, f'(60), is greater than the slope of the line passing through (40, f(40)) and (80, f(80)).
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