Question

EQUATIONS IN
Find the value of k, if x = 2, y = 1 is a solution of the equation 2x + 3y = k.
$\cot(\pi\pi\%\%\% \beta \pi\% \binom{ \csc(?) }{?} )$
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Answer 1

Since x = 2, y = 1 is a solution

2x + 3y = k

⇒2× 2 + 3 ×1 = k

⇒ 4 + 3 = k

⇒ 7 = k

Therefore value of k is 7

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Answer 2

Answer:

2x +3y=k

If x=2

and

y=1

-> 2x2+ 3x1=k

4+3x1=k

7x1=k

7=k