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Question

The value of k for which the system of equations 3x+5y=0 and kx+10y=0 has a non-zero solution, is ________.

A
0
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B
2
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C
6
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D
8
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Solution

The correct option is A 6
For a system of equations a1x+b1y+c1=0;a2x+b2y+c2=0 to have non-zero solutions, the condition to be satisfied is
a1a2=b1b2=c1c2

3k=510

or k=6

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