Write and graph direct variation equations.. 1. Solve for y : 2. Trevor ran 10 miles in 2 hours. At this rate, how far will he run in 3 hours? Determine.

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Presentation transcript:

Write and graph direct variation equations.

1. Solve for y : 2. Trevor ran 10 miles in 2 hours. At this rate, how far will he run in 3 hours? Determine whether or not the table shows direct variation. What is the rate as a fraction? xy

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This table shows ordered pairs which model direct variation. Write an equation relating the x and y coordinates.  Find the slope by calculating the ratio. Use any point.  Write the equation in the form y = mx

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Direct variation equations always look like y = mx. Which variable is a number when graphing direct variation equations? How do you find the number from a table of values?

Direct Variation Equations Lesson 23