Flashcards: Chapter Eight Linear Functions and Graphing
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Created by:
EHammett on October 8, 2009
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Awesome People Only!!!:), St. Margaret School - Otsego, MI, Algebra, bcbccbc, Tutoring 2, Math 140 (see more)
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Terms | Definitions |
|---|---|
 domain | the set of first coordinates of the ordered pairs of a relation. |
| function | a relation where each number in the domain is paired with exactly one number in the range. |
| function rule | an equation that describes a function. |
| linear equation | an equation whose graph is a line. |
| linear inequality | looks like a linear equation, but with an inequality symbol. |
| negative correlation | one set of data values increase as the other set decreases. |
| no correlation | there is no relationship between data sets. |
| positive correlation | both sets of data values increase. |
| range | the set of second coordinates of the ordered pairs of a relation. |
| relation | a set of ordered pairs. |
| scatter plot | a graph with points plotted to show a possible relationship between two sets of data. |
| slope | a ratio that describes the tilt of a line. |
| slope-intercept form | y=mx+b, where m is the slope and b is the y-intercept of the line. |
| solution | is any value or values that make an equation or an inequality true. |
| line of best fit | a line drawn in a scatter plot to fit most of the dots and shows the relationship between the two sets of data |
| vertical-line test | is something that allows you to describe graphically whether a relation is a function. |
| y-intercept | the y-coordinate of the point where the line crosses the y-axis. |
| point-slope form | y-y1 = m(x-x1), where m is the slope and (x1,y1) is the point the line is passing through. |
| standard form of a linear equation | Ax + By = C, where A,B, and C are real numbers, and A and B are not both zero. |
| x-intercept | the x-coordinate of the point where a line crosses the x-axis. |
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