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(Thursday) Proportional relationships, lines, and linear equations.
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by Lonnie Myers
| 4 Questions
Note from the author:
Analyze and describe linear relationships between two variables, using slope.
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1
1 pt
Complete the table below with the number of minutes it took for 9 centimeters of rain to fall and the number of centimeters of rain that fell through 150 minutes.
2
1 pt
Write an equation to describe the relationship between the time (t), in minutes, and the amount of rain (r), in centimeters.
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3
1 pt
Describe the change in the slope between the first 180 minutes and the following 100 minutes, and explain what it means in terms of the total amount of rainfall.

4
1 pt
After 280 minutes, the slope of the graph is 0. Explain what a slope of 0 means in this situation.

Pa Department of Education. 2016 Mathematics ADA Compliant Item and Scoring Sampler Grade 8