Question

3. The pair of linear equations 7x + ky = k, 14x + 2y = K + 1 has infinitely many solution it
(A) K = 1
(B)k #1
(C)k=2
(D)k=4​

Answer 1

Answer: Option A

EXPLANATION :

GIVEN :

Equations :

7x + ky = k and 14x + 2y = K + 1

We know that,

When an infinite number of solutions

Then,

a1/a2 = b1/b2 = c1/c2

a1 = 7 a2 = k

b1 = 14 b2 = 2

7/k = 14/2

7 × 2 = 14k

=> 14k = 14

=> k = 14/14

=> k = 1

Therefore, the value of k is 1.

Answer 2

Answer:

∆ (A) k= 1 ∆

Step-by-step explanation:

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