| coordinate plane | A plane with a rectangular coordinate system.
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| dependent variable | In y = 3x + 4, the value of y is dependent on the value of x.
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| domain | The set of all the first elements of the ordered pairs in a relation.
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| f-notation | A notation where f(x) is used as the dependent variable of a function.
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| function | A set of ordered pairs of real numbers in which no two have the same first and different second coordinates.
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| independent variable | In y = 3x + 4, x is the independent variable.
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| linear equation in two variables | An equation of the form Ax + By = C where A and B are not both zero.
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| linear function | A function of the form y = mx + b whose graph is a straight line.
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| ordered pair | A pair of numbers that represents a point in coordinate geometry. The first number of an ordered pair represents the x-coordinate of a point in the coordinate plane. The second number of an ordered pair represents the y-coordinate of a point in the coordinate plane.
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| origin | The point of intersection of the x- and y-axis.
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| point-slope form | The form y - y1 = m(x - x1.
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| range | The set of second coordinates of a relation or function.
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| slope | A measure of the steepness of a line; The ratio of the vertical change to the horizontal change between two points on a line.
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| slope-intercept form | The form y = mx +b.
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| standard form | The form Ax + By = C where A and B are not both zero.
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| x-coordinate | The first number in an ordered pair.
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| x-intercept | A point at which a graph crosses the horizontal axis.
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| y is a function of x | The value of y is determined by x.
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| y-coordinate | The second number in an ordered pair.
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| y-intercept | A point at which a graph crosses the vertical axis.
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2002 McGraw-Hill Higher Education