Find the value of a for which the pair of equations ax - y = 2 and 6x - 2y = 4 has infinitely many solutions:
A) -12
B) 3
C) -3
D) None of these
Answers
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the ans is the (b) one
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Answer:
ax-y=2
a1=a b1= -1 c1= 2
6x-2y=4
a2=6 b2= -2 c2=4
a/6= -1/ -2
2a=6
a=3
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