The graph shows the daily megawatts of electricity used on a record-breaking summer day in Sacramento, California. (d) At what time was the most electric-ity used? the least electricity? (e) Call this function ƒ. What is ƒ(12)? Interpret this answer. (f) During what time intervals is usage increasing? decreasing?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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Chapter9: Quadratic Functions And Equations
Section9.6: Solving Quadratic Equations By Using The Quadratic Formula
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The graph shows the daily megawatts of electricity used on a record-breaking summer day in Sacramento, California.

(d) At what time was the most electric-ity used? the least electricity?

(e) Call this function ƒ. What is ƒ(12)? Interpret this answer.

(f) During what time intervals is usage increasing? decreasing?

The graph shows the daily megawatts of electricity used on a record-breaking summer day
in Sacramento.
Electricity Use
a) Is this the graph of a function? Why?
b) What is the domain? What is the range?
c) Estimate the number of megawatts
used at 8am. Call the function f.
Give the answer using function notation.
d) At what time was the most electricity used?
the least?
e) What is f(12)? What does it mean?
f) During what time intervals is electricity usage
increasing? Decreasing? Constant
Megawatts
2500
2300
2100
1900
1700
1500
1300
1100
900
700
H
4
8
12
Noon
Hours
16
20
24
Transcribed Image Text:The graph shows the daily megawatts of electricity used on a record-breaking summer day in Sacramento. Electricity Use a) Is this the graph of a function? Why? b) What is the domain? What is the range? c) Estimate the number of megawatts used at 8am. Call the function f. Give the answer using function notation. d) At what time was the most electricity used? the least? e) What is f(12)? What does it mean? f) During what time intervals is electricity usage increasing? Decreasing? Constant Megawatts 2500 2300 2100 1900 1700 1500 1300 1100 900 700 H 4 8 12 Noon Hours 16 20 24
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