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This is a complete sentence on its own, where 'the generating points on the map' is the noun phrase subject of the verb 'suck'.
A clause is an expression including a verb and a predicate that gives an "extra information" about the subject and doesn't make sense if it's used by itself (see in italics)
ex: the generating points, which are on the map, suck.
Suck / Sucks 
Linear Mode
