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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