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In the XY-cordinate plane, line l and line k intersect at [#permalink]
30 Oct 2006, 20:57
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In the XY-cordinate plane, line l and line k intersect at point(4,3). Is the product of their slopes negative?
1) The product of the x-intercepts of lines l and k is positive.
2) The product of the y-intercepts of lines l and k is negative.
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Looks like it's B by drawing diagrams.
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