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Graph
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A two-dimensional representation of a set of number or data.
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Time Series Graph
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A graph illustrating how a variable changes over time.
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X-Axis
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The horizontal line against which a variable is plotted.
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Y-Axis
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The vertical line against which a variable is plotted.
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Origin
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The point at which the horizontal and vertical axes intersect.
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Y-Interecept
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The point at which a graph intersects the Y-axis.
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X-Intercept
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The point at which a graph intersects the X-axis.
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Positive Relationship
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A relationship between two variables, X and Y, in which a decrease in X is associated with a decrease in Y, and an increase in X is associated with an increase in Y.
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Negative Relationship
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A relationship between two variables, X and Y, in which a decrease in X is associated with an increase in Y and an increase in X is associated with a decrease in Y.
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Slope
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A measurement that indicates whether the relationship between variables is positive and negative and how much of a response there is in Y (the variable on the vertical axis) when X (the variable on the horizontal axis) changes.