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Math Help - vertical stretching

  1. #1
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    vertical stretching

    if f(x+n)+c is vertically stretched by a factor of 7, is the resultant function

    7f(x+n)+c OR 7f(x+n) +7c

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  2. #2
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    There is no difference here as you can say 7c = c
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  3. #3
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    maybe i can make it more clear by putting a constant?

    7f(x+n)+2 or 7f(x+n) +14
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  4. #4
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    anyone?
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  5. #5
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    In either case, the graph is "stretched" by 7. In the first case, 7f(x)+ 2, the distance between high and low values of the graph is stretched by 7 while the distance from the x-axis to some fixed point on the graph stays the same. In the second case, 7f(x)+ 14, the distance between high and low values of the graph is stretched by 7 and the distance from the x-axis to some fixed point on the graph is also stretched by 7. So it is all a matter of "what do you [i]mean[/b] by "stretched"?
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