Equations of Lines

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Equations of Lines
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Slopes of Lines
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Slopes of Lines
If the slope is positive the line is increasing
If the slope is negative the line is decreasing
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Slopes of Lines
If the slope is zero the line is horizontal
If the slope is undefined the line is vertical
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Slopes of Lines
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Graphing Lines
The x-intercept is the point where the line
crosses the x-axis, found by setting y 0 and
solving for x.
The y-intercept is the point where the line
crosses the y-axis, found by setting x 0.
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