Math, asked by TbiaSupreme, 1 year ago

For what value of 'k', the pair of equation 3x + 4y + 2 = 0 and 9x + 12y + k = 0 represent coincident lines.

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Answered by RRBrand

21

for coincidence line A1/A2 =B1/b2 =C1/c2

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