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September 3, 2014

September 3, 2014

Posted by **Lexie** on Tuesday, May 14, 2013 at 8:37pm.

This question says

Joe is thinking of o function machine.He says that the output is 12 if the input is 4.what are 2 rules that he could be thinking of for his function machine?( I would really be grateful if you helped me)

;)thanks

- 4th grade math -
**Reiny**, Tuesday, May 14, 2013 at 10:24pmThink of what you could do to 4 to turn it into 12

- could multiply it by 3 ---> y = 3x

-could add 8 to it -------> y = x+8

-could double it then add 4 --- y = 2x + 4

-could take 1/2 of it then add 10 --> y = (1/2)x + 10

etc.

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