Question

SECTION-B
If line 3x + ky = 9 passes through the point (1,-2). Find k.
01​

Answer 1

Answer:

k=-3

Step-by-step explanation:

If it passes the given point (1.-2) then it satisfies the equation 3x + ky =9

so,

3 X 1 + k X -2 =9

3 -2k=9

-2k=6

k=6/-2

k= -3

Answer 2

Answer:

k = -3

Step-by-step explanation: let 3x+ky = 9 ----------(1)

                       ⇒   passing point (1,-2) in equation (1), we get

                       ⇒    3 x 1 + k x -2 = 9

                       ⇒    3-2k =9

                       ⇒    -2k = 9-3

                       ⇒    -2k = 6

                       ⇒      k = - 6/2

                       ⇒      k = -3