Posted by Lexie on .
Hi!
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,
Think 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.