Aims Grade 8 Mathematics Sample Test And Think-Throughs With Answers Page 20
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36December 2009
Which statement does not describe a linear relationship?
9a
All linear equations are straight lines.
A
All linear equations must cross the x-axis.
B
If the slopes of two lines are the same, the lines go in the same direction.
C
If the y-intercepts of two lines are the same, the lines cross the y-axis at the same
D
point.
Which of the following is not a linear relationship?
9b
The path of a baseball after it has been hit.
A
The amount of water collected from a dripping faucet.
B
The cost of movie tickets and the number of tickets purchased.
C
The mass of an object that constantly gains weight at the same rate.
D
Summary Statement:
These problems are about making, validating, and justifying conclusions and generalizations about
linear relationships. This objective tests thought process skills which could include any area of
linear relationships, not just slope.
Arizona Department of Education
20
Grade 8
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