Question

Find the value of k for which the following pair of linear equation have a unique solution 7 x minus 5 Y - 4 = 0 14X + K Y + 4 = 0

Answer 1

Answer:

For all values of k except -10 has unique solution

Step-by-step explanation:

Given equations are

7x - 5y - 4 = 0 and

14x + ky + 4 =0

w.k.t ,

a pair of linear equationd having unique solution satisfies the below condition

a1 / a2 is not equal to b1 / b2

here ,

7/14 should not be equal to -5 / k

i.e., 1 / 2 should not be equal to -5 / k

so, k should not be -10

k can be any other value except -10