Question

For what value of k the pair of equation 2x+3y+5=0andkx +4y=10

Answer 1

Answer:

Given equations :-

» 2x + 3y + 5 = 0

» kx + 4y = 10

➡ kx + 4y - 10 = 0

we have to find the value of k such that the pair of equations have unique solution.

we know that, when pair of equations have unique solution,

a1/a2 ≠ b1/b2

➡ 2/k ≠ 3/5

just put any value of k so that it doesn't get equal to 3/5.

you can put 1, 2 etc.

for example, k is 2, then a1/a2 = 2/2 = 1

LHS ≠ RHS