![]() ![]() Read Off a Point from Cartesian Coordinates To draw a point from Cartesian coordinates, use the x-coordinate to measure how far across the x-axis the point is and use the y-coordinate to measure how up (or down) the y-axis the point is. It tells you how far up (or down) the vertical y-axis a point is on a graph. The y-coordinate is the second number in the pair of numbers used to describe Cartesian coordinates. ![]() It tells you how far across the horizontal x-axis a point is on a graph. The x-coordinate is the first number in the pair of numbers used to describe Cartesian coordinates. Click the MORE button to learn more.Ĭartesian coordinates are used to describe the position of a point on a graph. The lessons are grouped into mini-curriculum to help you organise your learning.Ī brief description is given for each mini-curriculum. Coordinate geometry allows us to do this. We might want be interested in how a shape is moved. We might be interested in the distance between two points. Here are some examples from coordinate geometry. The coordinates can be used to describe points on lines, curves and shapes. The x-coordinate is on the left, the y-coordinate is on the right. The x-coordinate (x) and the y-coordinate (y) are then written in brackets, separated by a comma. In general, if the point is y units up the y-axis, its y-coordinate is y.Įach point can be written as a pair of coordinates: The y-coordinate measures how far up the point is (in the vertical direction) up the y-axis. In general, if the point is x units along the x-axis, its x-coordinate is x. The x-coordinate measures how far across the point is (in the horizontal direction) along the x-axis. The Merriam-Webster dictionary defines a graph as "a diagram (such as a series of one or more points, lines, line segments, curves, or areas)."Ĭoordinates are used to describe the position of a point on the graph. ![]()
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