Lin needs to mix a specific shade of orange paint for the set of the school play. The color is a mixture of red and yellow paint.
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Complete the table to show different combinations of red and yellow paint that will make the shade of orange Lin needs.
cups of red paint cups of yellow paint 2 3 6 12 12 21 1 1 -
Use the values in the table to create two graphs that can represent the relationship between cups of red paint and cups of yellow paint.
A B -
Describe the relationship between cups of red paint and cups of yellow paint in as many ways as you can.
Pause here for a discussion.
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Lin writes this equation to figure out the amount of yellow paint she will need if she knows the amount of red paint being used. In this equation,
represents cups of yellow paint and represents cups of red paint.
Do you agree that the equation represents the quantities in the situation? Explain your reasoning. - What equation can we write to figure out the amount of red paint needed if we know the amount of yellow paint? Be prepared to explain how you know.