krissywatts
is y=3x
x+y=4 a infinte solution or no solution?



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krissywatts
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i have it as no solution but i'm not sure

eliassaab
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Neither. It has one solution.
Replace y by its value in the second equation to obtain
\[ 3x + x = 4\\
4 x = 4\\
x=1
\]
What's y?

krissywatts
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3

eliassaab
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yes

krissywatts
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thanks

eliassaab
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yw