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Through math class, most middle school students are already familiar with coordinate grids and mapping x and y coordinates on a plane. To review some terms:
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#### Axes
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## Axes
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* The basic coordinate grid a student learns has two axes,
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>* an x-axis which runs horizontally and
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* a y-axis which runs vertically.
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#### Origin
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## Origin
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* These two axes meet at a point called the origin where both the x and the y values are zero.
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* On this basic coordinate grid, the origin is in the lower left corner of the grid and has the coordinates (0,0).
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#### Coordinate pair
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## Coordinate pair
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* The first value in a coordinate pair is the x value and the second value in a coordinate pair is the y value.
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* A simple way to remember which value comes first is to remember their order in the alphabet. The letter x comes before the letter y in the alphabet and the x coordinate comes before the y coordinate in a coordinate pair.
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#### Coordinate value changes
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## Coordinate value changes
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* On a basic coordinate grid,
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>* the value of the x coordinate increases left to right and is a measure of how many units a point is horizontally from the origin
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Reference in New Issue
Block a user