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Question -

If the point (2, -2) lies on the graph of linear equation, 5x + ky = 4, find the value of k.



Answer -

Point (2,-2) lies on the given linear equation, which implies (2, -2) satisfy this equation 5x + ky = 4.
Now, putting x = 2 and y = -2 in 5x + ky = 4
5 × 2 + ( -2 ) k = 4
10 – 2k = 4
2k = 10 – 4
2k = 6
k = 6/2 = 3
The value of k is 3.

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