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Function Tables 2
This topic continues the topic of function tables.
To review the basics of function tables, see here.
Example 1: Apply the rule
Use the given rule to fill in the missing values.
Find the missing y values, substitute the input values for x in the rule ( y = x ÷ 4).
24 → 

→ 6 
4 → 

→ 1 
36 → 

→ 9 
To find the missing x value, solve for y. 
y  =  x ÷ 4 
8  =  x ÷ 4 
8 × 4  =  x ÷ 4 × 4 
32  =  x 

So the answer is 

Example 2: Word problem
Fill in the missing values and find the rule that applies to the table. Write the rule in the format "y = ".
Maria has 5 more cookies than Jeremy.
1. Find the rule
Translate the sentence into an algebraic expression.
Maria has 

5 more cookies 
than Jeremy 
Number of cookies Maria has 
is 
5 more than 
the number of cookies Jeremy has 
y 
= 
+ 5 
x 

So the rule is y = x + 5.
2. Apply the rule
To apply the rule ( y = x + 5), substitute the input values for x in the rule.
9 → 

→ 14 
7 → 

→ 12 
8 → 

→ 13 
1 → 

→ 6 

So the answer is
Example 3: Word problem
Fill in the missing values and find the rule that applies to the table. Write the rule in the format "y = ".
Octagons have 8 sides.
1. Find the rule
Translate the sentence into an algebraic expression.
This is a rate problem where the rate is 8 sides per octagon.
So,
number of sides 
= 
sides per octagon 
× 
number of octagons 
y 
= 
8 
× 
x 

So the rule is y = 8x.
2. Apply the rule
To apply the rule ( y = 8x), substitute the input values for x in the rule.
8 → 

→ 64 
3 → 

→ 24 
6 → 

→ 48 
2 → 

→ 16 

So the answer is
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