Question

Find k if kx+3y+1=0 and 2x+y+3=0 has unique solution

Answer 1

$a1 \: = k \: b1 = 3 \: \: c1 = 1 \\ a2 = 2 \: b \:2 = 1 \: c2 = 3 \\ it \: is \: unlqe \: solution \\ a1 \div a2 = b1 \div b2 \\ k \div 2 = 3 \div 1k = 6$
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Answer 2

Answer:

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