Question

5. For what value of k the following pair of linear
equations has unique solution?
7x + 8y = k
Ix – 4y = 12​

Answer 1

Answer:

7x+8y-k=0

1x-4y-12=0

Unique solution

a1/a2is not=b1/b2

a1=7,b2=8

a2=1,b2=4

7/1is not=8/4

k is any rela number

Answer 2

Answer:

your answer is in the given attachment