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**Unformatted text preview: **1 MAC1105 Names:____________________________ Group work 1 August 25, 2011 ___________________________________________________________________________________________________ 1. YES or NO, do the following definitions describe y as a function of x? If the answer is no, use an example to explain. a) b) c) x = any student at SF y = a class that student has taken Ans:________ x = any student at SF y = the SF ID number for that student Ans:________ x = any student at SF y = the date that student was born Ans:________ ----------------------------------------------------------------------------------------------------------------------------------------------------- 2. YES or NO, do the following formulas describe y as a function of x? If the answer is no, use an example to explain. a) 2 y x 4 = + = + = + = + Ans:_________ b) y x 8 =- =- =- =- Ans:_________ c) y 10 = Ans:_________ d) 3 y x 2 = + = + = + = + Ans:_________ e) 2 y x 2 = + = + = + = + Ans:_________ f) 2x y 8 + = + = + = + = Ans:_________...

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