One neg and one positive.........in the 2nd and 4th quadrants..........why else is that imp......?? Every neg even number has a zero.........2 and 4 are the 1st 2 even numbers......1/2...........1st two....math logic................OR............it can this or that or that or that.........multiple options......one of the reasons the different parts of the math cannon are similar.....
Cartesian coordinate system
A
Cartesian coordinate system is a coordinate system that specifies each
point uniquely in a plane by a set of numerical coordinates, which are
the signed distances to the point from two fixed perpendicular directed
lines, measured in the same unit of length. Wikipedia
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