Question

For what value of k , the pair of linear

equations 2x-y-3=0 and 2kx +y -2= 0 has

103olution= 1 and y= -1

a) 3 b) 3/2 c) 4 d) -4​

Answer 1

Answer:

2kx+y-2=0

put value of x and y in it

x=1

y=-1

2k(1)+(-1)-2=0

2k-3=0

2k=3

k=3/2

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Answer 2

Step-by-step explanation:

2x-y-3=0

2x-(-1)-3=0 (since.. y=-1)

2x+1-3=0

2x-2=0

2x=2

x=2/2

x=1

now.

2kx+y-2=0

2k(1) +(-1)-2=0

2k-1-2=0

2k=3

k=3/2

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