Question

find the value of k for which the given system of equation has (b) becomes consistent (ii) 3x-7y =6 21x-49y =1-1​

Answer 1

Answer:

ANSWER

The given equations are

3x+5y=12

4x7y=k

Comparing with general form of equations

a1x+b1y+c1=0

a2x+b2y+c2=0

Here we have

a1=3,b1=5

a2=4,b2=-7

For unique solution

a2a1=b2b1

43=−75[which is true]

So, for any real number k, given system of equation has unique solution