Question

x= 3 and y= -2 is a solution of the equation kx - 3y = 12, then the value of k is​

Answer 1

Answer:

k=2

Step-by-step explanation:

Given:

x= 3

y= -2

kx-3y=12

substitute x= 3 and y= -2 in the solution,

k(3)-3(-2)=12

3k+6=12

3k=12-6=6

k=6/3

k=2

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Answer 2

Given: x= 3 and y= -2 is a solution of the equation kx - 3y = 12.

To find: Value of k

Solution: Since x=3 and y= -2 is a solution of the equation, it means that when we put the value 3 in place of x and value -2 in place of y, the expression on the left hand side (kx-3y) should be equal to the value on the right hand side, that is, 12.

Putting x=3 and y= -2 in the equation:

k× 3 - 3×(-2) = 12

=> 3k + 6 = 12

=> 3k = 12-6

=> 3k = 6

=> k = 6/3

=> k = 2

Therefore, the value of k is 2.