Correct Answer - Option 4 : 3
Given:
For two lines 7x + 3y = 5 and 14x + 2ky = 12 to be parallel
Concept used:
For two lines to be parallel, a1/a2 should be equal to b1/b2
Calculation:
For two lines to be parallel, a1/a2 should be equal to b1/b2
For the given set of lines, a1 = 14, a2 = 28, b1 = 6, b2 = 4k.
According to the question,
⇒ 14/28 = 6/4k
⇒ k = (3/2) × (28/14)
⇒ k = 3
∴ The value of k should be 3.