On a math test a​ student, Sarah​, has to identify all the coefficients and constants of the expression 9 b + 4 + y. Sarah says that 9 is a

Question

On a math test a​ student, Sarah​, has to identify all the coefficients and constants of the expression 9 b + 4 + y. Sarah says that 9 is a coefficient and 4 is a constant. Identify all the coefficients and constants of the expression. What error might Sarah have​ made?

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Aaliyah 11 hours 2021-10-13T08:04:31+00:00 1 Answer 0

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    2021-10-13T08:06:14+00:00

    Step-by-step explanation:

    4 + n + 7m

    constants are just the numbers with no variables (letters)

    so the constant is 4

    coefficients are numbers multiplied by variables (letters)

    so the coefficients are : 7 and 1

    the error sarah made is forgetting the coefficient of n……because even if it is not written, n is the same as 1n….so basically, there is a coefficient for EVERY variable, even if its not written.

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