Lecture
Each point of the coordinate plane corresponds to two coordinates.
The coordinates of a point on a plane are a pair of numbers in which in the first place is the abscissa,
and on the second - the ordinate point.
Consider as in the coordinate system (on the coordinate plane):
To find the coordinates of a point on a plane , you need to drop perpendiculars on the coordinate axis from this point.
The point of intersection with the x axis is called the abscissa of point A, and with the y axis it is called the ordinate of point A.
Indicate the coordinates of the point, as indicated above (•) A (2; 3).
Example (•) A (2; 3) and (•) B (3; 2).
The abscissa (coordinate along the x axis) is recorded in the first place, and the ordinate (coordinate along the y axis) of the point is recorded in the second place.
Find a point in the coordinate system in two ways.
To determine the position of a point by its coordinates, for example, the point D (-4, 2), it is necessary:
To find the point D (-4, 2) you need:
To make it easier and more convenient to find the coordinates of points or build points by coordinates on an A4 sheet in a cell, you can download and use the ready-made coordinate system on our website.
Comments
To leave a comment
Arithmetic
Terms: Arithmetic