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
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=−a−2a=12a1a2=b1b2=c1c2=12
Hence, the given pair of linear equations has infinitely many solutions.
Hence the pair of linear equations is consistent