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Lesson 3 (Writing Equations from Tables) How can you write an equation from a table? How can you write an equation from a table? What does m represent?

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Presentation on theme: "Lesson 3 (Writing Equations from Tables) How can you write an equation from a table? How can you write an equation from a table? What does m represent?"— Presentation transcript:

1 Lesson 3 (Writing Equations from Tables) How can you write an equation from a table? How can you write an equation from a table? What does m represent? What does m represent? For linear equations, look for a pattern. For linear equations, look for a pattern. Must be in y=mx+b format. If it needs to be in functional notation, replace y= with f(x)= Must be in y=mx+b format. If it needs to be in functional notation, replace y= with f(x)= m represents slope. To find this value, look for the common difference in y values. m represents slope. To find this value, look for the common difference in y values.

2 Lesson 3 (Writing Equations from Tables) What does b represent? What does b represent? B represents the y intercept. B represents the y intercept. To find this value, look to see what needs to be added or subtracted to get to first value in table. To find this value, look to see what needs to be added or subtracted to get to first value in table.

3 Lesson 3 (Writing Equations from Tables) Example 1 Example 1 Given the following table representing pizza prices, write an equation to represent the same information. Given the following table representing pizza prices, write an equation to represent the same information. Number of toppings Total Price 1$9.00 2$ $ $16.50

4 Lesson 3 (Writing Equations from Tables) Example 2 Example 2 The following table represents corsage prices. Write an equation to represent the information. The following table represents corsage prices. Write an equation to represent the information. Number of Flowers Total Price 1$3.85 2$5.60 3$7.35 4$9.10

5 Lesson 3 (Writing Equations from Tables) Always make sure when finding the pattern, x values are increasing by 1. Always make sure when finding the pattern, x values are increasing by 1. xy

6 Lesson 3 (Writing Equations from Tables) How do you find an equation from a table on the calculator? How do you find an equation from a table on the calculator? 1. Input table (STAT, EDIT) 1. Input table (STAT, EDIT) 2. Go back to STAT, this time arrow over to CALC 2. Go back to STAT, this time arrow over to CALC 3. For linear equations, hit #4, press ENTER 3. For linear equations, hit #4, press ENTER 4. Make sure to write in form y=mx+b 4. Make sure to write in form y=mx+b


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