Coordinate Plane
When comparing data
rlly noone awnsered this
A Cartesian coordinate plane system specifies each point uniquely in a plane by a pair of numerical coordinates. These coordinates are the signed distances from the point to two fixed perpendicular directed lines often called the x and y axis. The measurements on the axes are same units of length. The use of x and y to name is axes is common, but there are many other ways to name them.
To graph points on a graph, typically for Algebra or Geometry. :)
Usually the first quadrant.
coordinate plane was created by the Romans
Coordinate Plane
When comparing data
rlly noone awnsered this
You use the distance formula.
A Cartesian coordinate plane system specifies each point uniquely in a plane by a pair of numerical coordinates. These coordinates are the signed distances from the point to two fixed perpendicular directed lines often called the x and y axis. The measurements on the axes are same units of length. The use of x and y to name is axes is common, but there are many other ways to name them.
The North American Datum of 1983 (NAD83), which is defined in metres, replaced The NAD27 in the 1980s. The State Plane Coordinate Systems were also updated, but the National Geodetic Survey left the individual states to decide which (if any) definition of the foot they would use. All State Plane Coordinate Systems are defined in meters, and 42 of the 50 states use the meter-based State Plane Coordinate Systems only.
To graph points on a graph, typically for Algebra or Geometry. :)
Yes, almost all the time. And when it is not coordinate planes it is coordinate hype-spaces (more than just the 2 dimensions that the coordinate plane allows).
We assign coordinates to point on the plane and use those coordinates to tell us about the points. For example, the distance formula tells us how far apart they are, the midpoint formula tells us where there midpoint is. All of these and much more depend looking at a point as an ordered pair, (x,y) in the coordinate plane.The coordinate system is determined by the two directed lines and the given unit length. When the directed lines intersect at a right angle, the system is Cartesian, and (x,y) are Cartesian coordinates of the point. Normally, x-axis and y-axis are chosen so that an anticlockwise rotation of one right angle takes the positive x-direction to the positive y-direction. There are other methods of assigning coordinates to points in the plane. one such is the method of polar coordinates. The coordinate plane is the main idea in analytic geometry.
Keep in mind that 'ordinate' is a noun and refers to the distance between a point and the x-axis on a Cartesian plane, or the y-coordinate of the point. You could say, then, "The ordinate of point A is (blank)," which would refer to the distance from point A to the x-axis, or if you want to assure that there is no confusion, "The ordinate of point A to the x-axis is (blank)." To my knowledge, that is the only use for the word 'ordinate.'