If the graph of 3x + ky =9, passess through the point (1,-2), Find k.

Hope it helps:-

Equation:- 3x + ky = 9.
Let x be 1,
And y be -2.
By substituting the values in the equation we get:-
3(1) + k(-2) = 9.
3 - 2k = 9.
-2k = 9 - 3.
-2k = 6.
k = -6 / 2.
k = -3.

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