Question

if the system of equation 9 X + 3 Y + 12 = 0 and 18 x + 6 Y + 7 k = 0 has infinite number of solution then the value of k is​

Answer 1

Step-by-step explanation:

a1=9 ,b1=3 ,c1=12

a2=18 ,b2=6 ,c2=7k

for infinitely many solution

a1/a2 =b1/b2=c1/c2

9/18=3/6=12/7k

1/2=1/2=12/7k

1/2=12/7k

1/2 ×7/12=k

7/24 =k

k=7/24

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