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Question 765693: [question part "a"] write a rule using function notaion f(x)= ___
[question part "b"] then give a reason why its a function.
1a. choose any number, then divide it by 6. i wrote down f(x)= x/6
1b. im lost on the second part of the question
2a choose any number, multiply it by 3, then add15. i wrote down f(x)=3x+15
2b. im lost on the second part of the question
Answer by rothauserc(4718)   (Show Source):
You can put this solution on YOUR website! A function relates an input (domain) to an output (range)
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1a) f(x) = x/6, domain is any number and the range is any number
1b) each number x is related to x/6 and each x of the set of all numbers is related to EXACTLY ONE number (x/6) in the set of all numbers. This makes f(x) a function. Remember "exactly one" means that a function is single valued, it will not give back 2 or more results for the same input.
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2a) f(x) = 3x +15, domain is any number and the range is any number.
2b) each number x is related to 3x+15 and each x of the set of all numbers is related to EXACTLY ONE number (3x+15) in the set of all numbers. This makes f(x) a function. Remember "exactly one" means that a function is single valued, it will not give back 2 or more results for the same input.
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