Question

If (2,2) lies on $4x+5y=k$, the value of $k$ is

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• A. 28
• B. 18
• C. 8
• D. 10

Answer 1

The correct option is B

18

Putting the value of $x$ and $y$ in the equation we get:
$\Rightarrow 4\left(2\right)+5\left(2\right)=k$
$\Rightarrow k=18$

Thus, the value of $k$ is 18.