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For any point, the abscissa is the first value (x coordinate), and the ordinate is the second value (y coordinate). In mathematics, the abscissa (/ æ b ˈ s ɪ s. ə /; plural abscissae or abscissas) and the ordinate are respectively the first and second coordinate of a point in a Cartesian coordinate system: [1] [2]
Fixing or choosing the x-axis determines the y-axis up to direction. Namely, the y-axis is necessarily the perpendicular to the x-axis through the point marked 0 on the x-axis. But there is a choice of which of the two half lines on the perpendicular to designate as positive and which as negative.
A point in the plane may be represented in homogeneous coordinates by a triple (x, y, z) where x/z and y/z are the Cartesian coordinates of the point. [10] This introduces an "extra" coordinate since only two are needed to specify a point on the plane, but this system is useful in that it represents any point on the projective plane without the ...
Both authors used a single axis in their treatments, with the lengths of ordinates measured along lines not-necessarily-perpendicular to that axis. [2] The concept of using a pair of fixed axes was introduced later, after Descartes' La Géométrie was translated into Latin in 1649 by Frans van Schooten and his students.
Official cause and origin of fire remain under investigation. Spencer Fire and Emergency Services shared a post saying two families "lost everything tonight and a third had damage to their home ...
The entire point of referring to these axes as "abscissa and ordinate" is for free yourself from a specific reference. Yes, it is usual -- in cartesian coordinates -- that the abscissa is x and the ordinate is y, but that's not *always* the case (consider for example action occurring in the y-z plane or the z-x plane).
Kennedy Johnson was a teenager when she gave birth to a baby girl in a Detroit foster home. Then, on a visit to Ghana, she was chosen to become “Friendship Queen.”
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