JEE MATHEMATICS MCQ: STRAIGHT LINES

1 Easy

1 of 1

Analyzing +4 | -1

If the lines

x+a y+a=0, b x+y+b=0

and

c x+c y+1=0\,(a, b, c

being distinct

\neq 1)

are concurrent, then the value of

\frac{a}{a-1}+\frac{b}{b-1}+\frac{c}{c-1},

View answer and explanation

Correct option: C

Option C (1) is correct because the concurrency condition leads to a relationship between a, b, and c, which simplifies the given expression to 1.

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