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| Question 321994:  what is the result of substituting a value for a variable in a function?
 Answer by nyc_function(2741)
      (Show Source): 
You can put this solution on YOUR website! To evaluate a function, we insert a given x value, a number in the domain, and see what number we get, which is a number in a range. SAMPLE:
 f(x) = x + 2
 Pick a number for x.  Any number will do.
 Say, x = 3.
 f(3) = 3 + 2
 f(3) = 5
 Here, 3 is the number in the domain of the function and 5 is the range of the function.
 Understand?
 
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