RRB Junior Engineer Stage 1 Model Papers 6

Question : 20 of 99

Marks: +1, -0

For what value of k, the system of equations

kx + 2y =2

and

3x + y = 1

will be coincident?

Solution:

Kx + 2y = 2

... (1)

3x + y = 1

... (2)
divide eqn (1) by (2)

k/2+y=1

for system of equation to be coincident

k/2=3

K = 6

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