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Graphical Representation of Linear Equation in 2 Variables

If 2,2 lies o...

Question

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

If the point (2,2) lies on the given linear equation, then it must satisfy the equation.
Putting the value of x and y in the equation we get:
$\Rightarrow 4 (2) + 5 (2) = k$
$\Rightarrow k = 18$
Thus, the value of k is 18.

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