Question

The value of k if kx+2y=10 and x-y =5 have no solution

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Answer 1

Answer:

kx + 2y = 0

x - y = 5

a1 / a2 = k / 1 ------(1)

b1 / b2 = - 2/ 1-----(2)

c1 / c2 = 0

NOW,

on compare (1 ) & (2)

k / 1 = 2 / 1

by cross multiplication

k = 2

This is the ans.

Hope ! it helps.