We will be moving on to function tables in math soon. I know this can be a bit confusing to some students so as a means of early preperation, please review this with your child/children. Please let me know if you would like some extra practice.
FUNCTION TABLES- find a rule (+ or -)
A function table is a table of order pairs that followa rule.
|
INPUT |
x |
6 |
9 |
12 |
15 |
|
OUTPUT |
y |
4 |
7 |
|
|
A rule tells how one number is related to another.Rule: Subtract 2x-2=y6-2=49-2 =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 |
- You add 4 to each INPUT number to get the OUTPUT number.
- The rule for this table is Add 4.
- 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