Question

If the pair of linear equations 5x + ky = - 7, x + 2y = 3 is inconsistent, then the value of k is

(a) k = (b) k (c) k = 10 (d) k 10
​

Answer 1

hey buddy,

here is your answer..

Answer:

K = 10

Step-by-step explanation:

Algebraically, for such a case, a1/a2 = b1/b2 ≠ c1/c2 and the pair of linear equations in two variables is said to be inconsistent.

$\frac{a1}{a2} = \frac{b1}{b2} ≠ \: \frac{c1}{c2} \\ put \: the \: values \\ \frac{5}{1} = \frac{k}{2}≠ \frac{ 7}{ - 3} \\ \frac{5}{1} = \frac{k}{2} \\ cross \: multipy... \\ k = 10$

_according to the question ...

•by first eq.

a1 = 5, b1=k , c1 = 7

•by second eq.

a2 = 1, b2 = 2 , c2 = -3

I hope it helps you

thank you

good night..✌❤

Answer 2

The Answer is.....

K = 10

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