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7 Cards in this Set
- Front
- Back
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Coordinate system
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The Coordinate system is the intersection of a horizontal and vertical number lines. You can locate points using the coordinate system.
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x-y coordinate plane
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The x-y coordinate plane is based on two number lines.
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x-axis
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The horizontal line is the x-axis.
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y-axis
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The vertical line is the y-axis.
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quadrants
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The axes divide the plane into 4 quadrants numbered I, II, III, IV. The quadrants are numbered counter-clockwise beginning in the upper right with I.
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ordered pair
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Any point is described by an ordered pair. The first number, the x-coordinate, tells you how far to the left (for a negative number) or right (for a positive number) of the origin the point is. The second number, the y-coordinate, tells you how far to the up (for a positive number) or down (for a negative number) of the origin the point is.
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origin
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The intersection of the x-axis and the y-axis is called the origin. (0,0)
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