Plotting Points on a Graph
Read and plot coordinates using the x and y axes.
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The Coordinate Plane
The plane has two number lines: the horizontal x-axis and the vertical y-axis. They meet at the origin (0,0).
Coordinates: a point is written as (x, y). The x-value comes first (left/right), then the y-value (up/down).
Reading a Point
Point A at (3, 2): move 3 steps right along x, then 2 steps up. Point B at (−2, 4): move 2 steps left, then 4 up.
Plot: (5,0) is on the x-axis. (0,−3) is on the y-axis below the origin. (4,4) is in the top-right quadrant.
Practice
On graph paper, plot P(2,3), Q(−1,5), R(0,−2) and S(−3,0). Write the coordinates of each axis crossing.
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Coordinate Geometry
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