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Question

Question 3 (iii)
Are the following pair of linear equations consistent? Justify your answer
2a + by = a and 4a + 2by -2a = 0; a, b 0


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Solution

2ax + by – a = 0
and 4ax + 2by – 2a = 0
here, a1=2a, b1=b, c1=a;a2=4a,b2=2b,c2=2anow, a1a2=2a4a=12, b1b2=12=a2a=12a1a2=b1b2=c1c2=12
Hence, the given pair of linear equations has infinitely many solutions.

Hence the pair of linear equations is consistent


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