Question

for what value of K is the pair of linear equation x+2y=7 and 3x-ky=21 has infinitely many solutions​

Answer 1

Answer:

6

Step-by-step explanation:

FOR INFINITELY MANY SOLUTION THE PAIR OF EQUATION MUST FOLLOW--

A1/A2=B1/B2=C1/C2

1/3=2/K=7/21

BY TIS WE GET

1/3=2/K

K=6

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Answer 2

Answer:

6 is the correct answer

Step-by-step explanation:

x+2y=7

3x+ky=21

for infinitely many solution

2/k=7/21

2/k=1/3

k=6

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