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Solution of a Linear Equation in Two Variables

For which val...

Question

For which value of p does the pair of equation given below has unique solution?

4x + py + 8 = 0

2x + 2y + 2 = 0

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Solution

For unique solution

a1 / a2≠b1 / b2

Therefore.....

4 / 2≠p / 2

Cross Multiplying....

p≠ 4

therefore......

p can be equal to any value except 4

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