Proportional Relationships

Remember all proportional equations use y = mx

m = the constant

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To find the constant we use y/x.​

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​What equation would represent the table?

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​-Has to be a straight line.

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-Has to go through the origin (0, 0).​

​Does this graph show a proportional relationship?

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-Find a point on the graph.

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-Use y/x to find the constant.​

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Create an equation. y = mx​

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​Identify the constant

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​Ann rode her bike at a constant speed. She rode 3 mile in 21 minutes. Write an equation for minutes per mile.

-Find the unit rate, per means divide.

-Your equation will be set up as y = mx

-m represents your constant or unit rate.

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y = 7x​

• Read the labels for the x and y axis.

• X is at the bottom, Y is on the side.

• All points have an (x, y)

• There are 4 jam jars for every 2 cups of sugar.

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​Some text here about the topic of discussion.

​What does the point (4,2) mean?

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