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Function Tables

Function Tables. 4 th Grade. Vocabulary:. Function: A relationship in which one number depends on another number. Think of a function as a “rule.” Function Table: A table of ordered pairs that is based on a rule. A Function Table looks like this:. How does a Function Table work?.

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Function Tables

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  1. Function Tables 4thGrade

  2. Vocabulary: • Function: A relationship in which one number depends on another number. Think of a function as a “rule.” • Function Table: A table of ordered pairs that is based on a rule.

  3. A Function Table looks like this:

  4. How does a Function Table work? Input Function (Rule) = Output

  5. How to solve a Function Table : • Figure out the rule. • Write an equation. • Use the equation to solve for the unknown variables.

  6. How to solve a Function Table? 10 7 X 9 Input Function or “Rule” + 7 + 7 + 7 = b = Output + 7 x + 7 = b 14 7 + 7 = 14 16 9 + 7 = 16 17 10 + 7 = 17

  7. How to solve a Function Table? a Input Function or “Rule” X 6 x 6 x 6 = b = Output x 6 a x 6 = b 48 8 x 6 = 48 60 10 x 6 = 60 72 12 x 6 = 72

  8. How to solve a Function Table? x 7 x 7 x 7 72 48 60 w x 7 = v w Input 8 x 7 = 56 Function or “Rule” X 7 10 x 7 = 70 12 x 7 = 84 = Output = v

  9. How to solve a Function Table? m Input - 9 Function or “Rule” - 9 - 9 10 = s = Output 23 m - 9 = s 19 - 9= 10 m - 9= 14 You find the last two answers. 14 + 9 = m 23 = m

  10. Real World Example: Money Find the rule. Write the equation. Solve for the unknown.

  11. White Board Practice: Find the rule. Write the equation. Solve for the unknown.

  12. White Board Practice: Find the rule. Write the equation. Solve for the unknown.

  13. White Board Practice: Find the rule. Write the equation. Solve for the unknown.

  14. Exit Ticket: 17. What is the value of m in the equation below if n=6? 9 x n = m 18. What is the value of the expression below? 8 x (9 – 6) 19. Find the rule, write an equation, and solve.

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