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3 February, 13:01

Why will the value of y for the function y equals 5x + 1 always be greater than that of y equals 4x + 1 with X greater than 1?

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  1. 3 February, 13:26
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    Because 5 times any number > 1 will always be greater then 4 times any number > 1.
  2. 3 February, 13:27
    0
    You mean

    the linear equations, 5x-y+1=0,4x-y+1=0

    the slopes are 5 and 4 respectively.

    it is clear that slope of first equation is greater that is it has a steeper graph therefore it Will always be greater than the other for x > 1

    the same can be done by calculus; differentiation.

    note y=5x+1 is always greater than y=4x+1 for all x>1
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