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6 November, 08:48

If x and y are integers, and 3x + 2y = 13, which of the following could be the value of y?

A. 0

B. 1

C. 2

D. 3

E. 4

+2
Answers (2)
  1. 6 November, 10:18
    0
    They are all integers so ...

    first lets substitute

    A. 3x=13

    X=13/3

    b. 3x+2=13

    3x=11

    x=11/3

    c. 3x+4=13

    3x=9

    x=3

    d. 3x+6=13

    3x=7

    x=7/3

    E. 3x+8=13

    3x=5

    x=5/3

    therefore the possible is letter c because it must be an integer and the definition of integer states that it is not a decimal nor a fraction
  2. 6 November, 10:39
    0
    C. 2

    Because

    3x+2 (2) = 13

    3x+4=13

    3x=9

    x=3

    None of the other solutions work out so that both x and y are integers.
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