Line D passes through the points (-2,5) and (-1,-9). what is the slope of a line parallel to line D?
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Okay well, if you make a graph, Point A (7,0) and Point B (4,6) are in the top right quadrant. and Point C (1,1) and Point D (5,3) are in the top left, top right, and bottom left quadrant (I'll link a photo of the graph.)
so the lines intersect and make it perpendicular
so the lines intersect and make it perpendicular