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# Function rules

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### Function rules

1. 1. Function Rules By: Christine Berg Edited By: V T Hamilton
2. 2. FunctionThe relationshipbetween the inputand output values
3. 3. FunctionEach input value has EXACTLY one output value
4. 4. FunctionFunction Notation:f(n) = n + 5Output Input
5. 5. FunctionFunction Notation:f(n) = n + 5 Rule for Function
6. 6. Function Example:You are driving a car 50 miles per hour (mph)
7. 7. Function Example: D=rt d = 50t d=distanceR= rate t=time
8. 8. Function Set up a table using the previous function rule: d = 50 t Time 1 2 3 4 5 (Input)Distance(Output)
9. 9. FunctionFind the Rule ~ Remember to define the variable. Look at next slide to see if you are correct Hours Worked Salary 1 \$6.50 2 \$13.00 3 \$19.50 4 \$26.00 5 \$32.50
10. 10. AnswerDefine the variable s = salary h = hours Function Rule s = 6.50 h
11. 11. FunctionFind the Rule ~ then look at next slide to see if you are correct Weeks Plant Height 1 3 2 5 3 7 4 9 5 11
12. 12. Answer Define the variable h = heightw = number of weeks Function Rule h=2w+1
13. 13. Describe a functionin your own words.