Question

If X =-5 and y=6 is the solution of 3x+k y=15,find k *​

Answer 1

x = -5 & y = 6 is the solution of

3x + ky = 15 ______ ( i )

So, just put x = -5 & y = 3 in ( i )

→ 3(-5) + k(3) = 15

→ -15 + 3k = 15

→ 3k = 15 + 15

→ k = 30/3

Hence, k = 10 ______________ (Ans.)

Hope it helps.

^_____°

Answer 2

Answer:

k = 5

Step-by-step explanation:

3x+ky=15

3(-5) + k(6) =15

-15 + 6k =15

6k= 15+15

6k = 30

k= 30/6

k = 5

hope it helps u

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