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anonymous

  • 4 years ago

Which is a rational function? a. y=√x-3 b. y=x²-3x+5 c. y=x-5/x d.y=5

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  1. Akshay_Budhkar
    • 4 years ago
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    certainly y=5 looks rational

  2. anonymous
    • 4 years ago
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    from the word rational, "ratio", which among the options has a fraction? it's C

  3. Directrix
    • 4 years ago
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    A rational function is defined as the quotient of two polynomial functions. Grouping symbols are important in mathematics because they provide clarity. While, c. y=x-5/x appears to be the answer, it is not clear if c) mean y = (x - 5)/x or y = x - (5/x) which could be converted to y = (x^2-5) / x. I suppose that either interpretation leads to a rational function although grouping symbols would dissolve the ambiguity here.

  4. anonymous
    • 4 years ago
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    @directrix. correct

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