Question

the pair of line represented by the equation 2x+y+3=0 and 4x+ky+6=0.will be parallel of value of k is​

Answer 1

Answer:

k=2 as a/a'=b/b'=c/c'

Answer 2

Answer:

2x+y+3=0

4x+kx+6=0

$parallel \: then \\ \frac{a1}{a2} = \frac{b1}{b2} \\ \frac{2}{4} = \frac{1}{k}$

2k=4

k=2

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