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The number of values of a for which the ...

The number of values of `a` for which the lines `2x+y-1=0` , `a x+3y-3=0,` and `3x+2y-2=0` are concurrent is (a).0 (b) 1 (c) 2 (d) infinite

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Lines are concurrent if `|{:(3,,1,,-1),(a,,3,,-3),(3,,2,,-2):}|=0`
Since `C_(1) " and " C_(3)` are proportional lines are concurrent for infinite values of a.
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