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Graphing Independent and Dependent Variables

Graphing Independent and Dependent Variables. Warm Up. X Y = 10X X . 1 10 21. 10 100 210. 2). Write the equation for each table. a). b). Y = x + 4. Y = 5x. You can graph data in a table on the coordinate plane.

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Graphing Independent and Dependent Variables

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  1. Graphing Independent and Dependent Variables

  2. Warm Up X Y = 10X X 1 10 21 10 100 210 2). Write the equation for each table. a). b). Y = x + 4 Y = 5x

  3. You can graph data in a table on the coordinate plane. The x-coordinate is your independent variable and your y-coordinate is your dependent variable.

  4. Example 1: Jin’s car can get 24 miles per gallon. What are your independent and dependent variables? Complete the table and give the equation. The independent variable is gallons. The dependent variable is miles. 72 5 Y = 24x

  5. Example 1: Jin’s car can get 24 miles per gallon. Graph your data. The dependent variable is the miles which is graphed on the y-axis. The coordinates you will use to graph the equation on a coordinate plane will be: ( 1, 24) , ( 3, 72), ( 5, 120) 144 120 96 Miles 72 48 24 The independent variable is gallons which is graphed on the x-axis . 1 2 3 4 5 6 Gallons

  6. Example 2: Kelly can wash 4 dogs in 2 hours. Fill in the table and graph your data. The coordinates you will use to graph the equation on a coordinate plane will be: ( 1, 2) , ( 2, 4), ( 5, 10), (7, 14) 12 10 8 2 Dogs 6 4 4 10 2 12 1 2 3 4 5 6 7 Hours

  7. Example 3: A car rents for $40 a day and $1 for every mile driven. Fill in the table and graph your data. The coordinates you will use to graph the equation on a coordinate plane will be: ( 10, 50) , ( 20, 60), ( 50, 90), (100, 140) 110 100 80 50 Cost 60 60 40 90 20 110 10 20 30 40 50 60 70 Miles

  8. Practice Create a table and graph the data for each problem. Write the equation for each. 1). Kim bought 4 hot dogs for $ 2.00. 2). Joe can rake the leaves from 3 yards in 2 hours. 3). Ian bought a coffee for $3. Each refill cost $1.

  9. 1). Kim bought 4 hot dogs for $2.00. Sample answers 3.00 2.50 2.00 Price 1.50 1.00 0.50 Y=0.5x 1 2 3 4 5 6 7 Dogs

  10. 2). Joe can rake the leaves from 3 yards in 2 hours. Sample answers 9 7.5 6 Yards 4.5 3 1.5 Y= 1.50x 1 2 3 4 5 6 7 Hours

  11. 3). Ian bought a coffee for $3. Each refill cost $1. Sample answers 12 10 8 Cost 6 4 2 Y=x +3 1 2 3 4 5 6 7 Refill

  12. Closure Which variable is the x- coordinate? Which variable is the y-coordinate? Independent Dependent

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