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If the line , and y=mx are concurrent , then least value of is
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a
0
b
2
c
22
d
2
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Correct option is C
By eliminating x,y from three equations we get –2 = m (a + m) ⇒m2+am+2=0 Since m∈R⇒dis≥0∴a2−8≥0⇒|a|≥22
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If the lines ax+by+c = 0, bx+cy+a = 0 and cx+ay+b=0 are concurrent then the point of concurrency is
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