Question

If the pair of linear equation is x+ 2y = 3 and 2x + 4y = k are coincide then the value of k is?

Answer 1

Answer:

k=6

Step-by-step explanation:

The condition for coincident lines is a1/a2=b1/b2=c1/c2.

Here,

a1=1, b1=2, c1=3

a2=2, b2=4, c2=k

Hence,

1/2=2/4=3/k

Here, to satisfy the condition, k will be 6.Because after cancelation of 3/6, it will be 1/2...which satisfies the condition.

Hope it helps u...

Answer 2

The value of k = 6

Since x+2y=3 and 2x+4y=k coincide, the ratios of the coefficients of x and y and constant term must be equal.

i.e., 1/2 = 2/4= 3 /k

gives, 1/2 = 3/k

k = 2 × 3 = 6.

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