I don’t understand how your souposed to find the interval when it doesn’t touch a line.
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UNIT 2 • LINEAR AND EXPONENTIAL RELATIONSHIPS
Lesson 4: Interpreting Graphs of Functions
Practice 2.4.3: Recognizing Average Rate of Change
The graph below shows the amount of paint needed to paint the trim molding of a house. Use the
graph to answer questions 1 and 2.
у
2
1.8
1.6
1.4
1.2
Amount of paint (gallons)
1
0.8
0.6
0.4
0.2
X
100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400
Length of trim (feet)
1. What is the approximate rate of change for the interval [150,500)?
2. What is the approximate rate of change for the interval (900, 1300]?
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