3-6 Lines in the Coordinate Plane 3-6 Lines in the Coordinate Plane
3-6 Lines in the Coordinate Plane 3-6 Lines in the Coordinate Plane
3-6 Lines in the Coordinate Plane 3-6 Lines in the Coordinate Plane
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3-6 <strong>L<strong>in</strong>es</strong> <strong>in</strong> <strong>the</strong> Coord<strong>in</strong>ate <strong>Plane</strong><br />
The equation of a l<strong>in</strong>e can be written <strong>in</strong><br />
many different forms. The po<strong>in</strong>t-slope and<br />
slope-<strong>in</strong>tercept forms of a l<strong>in</strong>e are<br />
equivalent. Because <strong>the</strong> slope of a vertical<br />
l<strong>in</strong>e is undef<strong>in</strong>ed, <strong>the</strong>se forms cannot be<br />
used to write <strong>the</strong> equation of a vertical l<strong>in</strong>e.<br />
Holt McDougal Geometry
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