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Algebra 1 Vocabulary

Abscissa - The x-value of an ordered pair that describes the vertical distance from the x-axis. It is always written as the first element in the ordered pair.
example: 3 is the abscissa of the ordered pair (3, 5).

Direct variation - A relationship between two variables, x and y, that can be expressed as y=kx where k is the constant of variation.

Slope - The steepness of a line going from left to right; rise over run; a constant rate of change. If the line rises from left to right on the graph, then the line has a positive slope; if the line falls from left to right, then it has a negative slope. A horizontal line has a slope of zero. A vertical line has no slope; i. e. the slope is undefined. Slope is calculated using two points on the line. The difference of the y-values is divided by the difference in the x-values (rise divided by run). The symbol for slope is m.

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Thursday, October 28, 2010

GLOGSTER

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