Question

The value of k for which the pair of equations kx + y = 3 and 3x +6y=5 has a unique solution is :
(a)-1/2
(b) 2
(c)-2
(d) all the above

With solution please..
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Answer 1

Step-by-step explanation:

unique solution means

a1/a2 not equal to b1/b2

k/3 not equal to 1/6

k not equal to 1/2

therefore I can be all of the above

ans option d