Question

for what value of k the following pair of linear equations has unique solution ? 7x + 8y = k. 9x – 4y = 12.​

Answer 1

Step-by-step explanation:

hope you find it useful bro

Answer 2

Answer:

For any value of k the the pair of linear equation in two variable will be a unique solution

Step-by-step explanation:

Condition for a linear equation in two variable to have unique solution is a1/a2 not equal to b1/b2

Here a1=7;b1=8 in 1st euation and a2=9;b2=4

a1/a2 must be not equal to b1/b2

which is true here 7/9 not equal to 8/4