Tiny example
Across then up
The point (4, 2) means 4 across and 2 up.
Coordinates are a bridge between pictures and algebra.
Coordinates
A way to describe position using numbers.
Coordinates turn position into numbers. Once points have coordinates, we can draw, calculate, transform and compare them.
Why it matters
Coordinates make graphs, vectors, transformations, maps and data displays possible.
Things to watch for
- Swapping the x and y values.
- Forgetting that negative coordinates move left or down.
- Treating coordinates as labels rather than positions.
Where it connects
coordinatesgraphsgeometry
Try it in a tool
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