T.i.P.S.
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Students should use their knowledge of proportional and non-proportional relationships to determine when functions are proportional or non-proportional. Proportional functions will be in the form y = kx and non-proportional functions will be in the form y = mx + b. Students should be determining if a function is proportional or non-proportional in a mathematical or real-world situation.
Example
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The table below shows the relationship between the amounts of money in Sarah’s savings account and the number of months she has been saving money. Is this an example of a proportional relationship? Justify your thinking.
Digital Tools
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Resources
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Click on the following links for more information.
TEKS
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8.5 Proportionality. The student applies mathematical process standards to use proportional and non-proportional relationships to develop foundational concepts of functions. The student is expected to:
(H) identify examples of proportional and non-proportional functions that arise from mathematical and real-world problems