Who is asking: Student
I know that the proper name for the X axis is the abscissa, but, what is the proper name for the Y axis?
You've got the right idea, but more precisely the name abscissa goes with the Cartesian name of a POINT, not with an axis.
The abscissa of a point is its x-coordinate, or first coordinate, the ordinate of a point is its y-coordinate, or second coordinate.
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