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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
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Sep 24, 2015
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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
Mathematics
high-school
Latiffany
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Latiffany
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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.
Peter Abolins
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Sep 25, 2015
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Peter Abolins
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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
Joseph Nields
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Sep 30, 2015
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Joseph Nields
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