A function table is a table of order pairs that follow a rule.
INPUT | x | 6 | 9 | 12 | 15 |
OUTPUT | y | 4 | 7 |
A rule tells how one number is related to another.
Rule: Subtract 2
x-2=y
6-2=4
9-2 =7
So, the next two numbers are 10 and 13.
How can you find a rule and complete the table?
You can use number patterns to complete a table.
The number pattern is the rule for the table.
You always look for the pattern from the
INPUT to the OUTPUT.
INPUT | 6 | 10 | 15 | 18 | 20 | 23 |
OUTPUT | 10 | 14 | 19 |
What's the Rule?____________________
What do you have to do to each INPUT number to get the OUTPUT number below it?
6+4=10 10+4=14 15+4=19 |
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You add 4 to each INPUT number to get the OUTPUT number.
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The rule for this table is Add 4.
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Use the rule to complete the table. Then write the rule.
INPUT | 6 | 10 | 15 | 18 | 20 | 23 |
OUTPUT | 10 | 14 | 19 | 22 | 24 | 27 |
Rule: Add 4
Let's Practice!
http://www.studyzone.org/testprep/math4/d/functiontable4p.cfm
http://www.myteacherpages.com/webpages/TTravis/enrichment.cfm?subpage=1306484
http://teams.lacoe.edu/documentation/classrooms/amy/algebra/3-4/activities/functionmachine/functionmachine3_4.html
http://www.ixl.com/math/grade-4/function-tables
http://www.ixl.com/math/grade-5/function-tables