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7 Cards in this Set
- Front
- Back
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Slope |
The slope of non-vertical line is the ratio of the vertical change (rise) to horizontal change (run)
m = slope |
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Negative Slope |
Fall from left to right |
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Positive Slope |
Rise from left to right |
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Zero Slope (Slope of 0) |
Horizontal Line |
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Undefined Slope |
Vertical Line |
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Postulate 17 Slopes of Parallel Lines |
In a coordinate plane, two non-vertical lines are parallel if and only if they have the same slope
Any two vertical lines are parallel |
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Postulate 18 Slopes of Perpendicular Lines |
In a coordinate plane, two non-vertical lines are perpendicular if and only if the product of their slopes is -1
Horizontal lines are perpendicular to vertical lines
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