Question

For value of k will the following pair of linear equations have unique solution? 4x + ky = -8 and 2x + 2y = -2

Answer 1

Answer:

Step-by-step explanation: given equation are,

4x+ky=-8

2x+2y=-2

Since, for unique solution

a1/a2 is not equal to b1/b2

So therefore, we have to put that value of k so that a1/a2 is not equal to b1/b2

Now put the value of k=8

Equation is.,4x+8y= -8

2x+2y= -2

Now,

A1=4,b1=8

A2=2,b1=2

A1/A2,b1/b2

4/2,8/2

2/1 is not equal to 4/1

So therefore k =8

So that k can take any value execpt 4