Question 633312
Draw a number line.
Pick a point to be zero.
Determine a unit by picking a point
to the right as +1 and a point the 
same distance to the left of zero
as -1. Contine unit distances to
the left as -2,-3,-4,etc.
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The graph you want is a set of black
dots at -2,-4,-6 etc.
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Cheers,
Stan H.