### Brain Teasers

# Function Table #2

A function table is a table of order pairs that follow a rule. A rule tells how one number is related to another. In this brainteaser, I will give you a function table (sometimes called an input-output table) and you need to figure out what the rule is. I will give you an example.

Example:

Input(A) Output(B)

7(A), 9(B)

13(A), 15(B)

1(A), 3(B)

3(A), 5(B)

9(A), 11(B)

The rule in this example is add 2. Now here is the real deal. Find out what the rule is.

*This one will be harder than the example. Way harder.

Input(A) Output(B)

6(A), 4.5(B)

23(A), 17.25(B)

9(A), 6.75(B)

10(A), 7.5(B)

45(A), 33.75(B)

Example:

Input(A) Output(B)

7(A), 9(B)

13(A), 15(B)

1(A), 3(B)

3(A), 5(B)

9(A), 11(B)

The rule in this example is add 2. Now here is the real deal. Find out what the rule is.

*This one will be harder than the example. Way harder.

Input(A) Output(B)

6(A), 4.5(B)

23(A), 17.25(B)

9(A), 6.75(B)

10(A), 7.5(B)

45(A), 33.75(B)

### Answer

The rule to this function table is multiply A by 3, and then divide that number by 4. If you want to see it in an equation, look below.(Ax3)/4=B

Another way to write it:

(A*3)/4=B

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