Question

If the pair of equations 3x + ky = 5 and 9x + 12y = 6 is represent parallel lines then k will be

Answer 1

Step-by-step explanation:

If the pair of linear equations 3x + ky = 5 and 9x+12y=6 represent parallel lines,then,

$\frac{3}{9} = \frac{k}{12} \: is \: not \: equal \: to \: \frac{5}{6}$

on criss multiplying

$9k = 36$

$k = \frac{36}{9}$

$k = 4$

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