(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.

1

2

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.

3

4

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

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