Question

9. What is the value of k for which x = 2 and y = 1 is a solution of the equation 2x + 6y = k?

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Answer 1

Given:

value of x = 2

value of y = 1

Find:

K of equation

:- 2x + 6y = k

:- 2(2) + 6(1) = k

:- 2 × 2 + 6 × 1 = k

:- 4 + 6 = k

:- 10 = k

:- k = 10

Answer 2

Answer:

2x + 6y = k

2x2+6x1 = 4 + 6 = 10

hence k = 10