a.	Locate coordinates in the first quadrant of a coordinate grid.
b.	Give the coordinates in the first quadrant of a coordinate grid. <br /> <br /> <img src="http://emed.nucenter.org:8171/2010-12-10/3.2ab3+Locate+and+Give+first+quadrant+coordinates-posterimage.png" alt="http://emed.nucenter.org:8171/2010-12-10/3.2ab3+Locate+and+Give+first+quadrant+coordinates.m4v" height="270" class="aligncenter posterimg" width="480.0" />

3.1a Lines - parallel, perpendicular, intersection

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