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slope 1

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Manager
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Joined: 16 Apr 2009
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Schools: Ross
slope 1 [#permalink]

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New post 14 Jul 2009, 14:06
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A line with a slope of -4 will be parallel to a line with a slope of _______________


please explain.

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Senior Manager
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Re: slope 1 [#permalink]

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New post 14 Jul 2009, 14:11
-4.

That's the only way they can be parallel. Slope = Rise/Run = (change in Y)/(change in X). If they didn't increase/decrease the same amount on the Y axis for a given change in the X axis, then the lines would cross. The slope must be the same.
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Re: slope 1 [#permalink]

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New post 15 Jul 2009, 18:55
Thanks for the reply..

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If you would like to discuss this question please re-post it in the respective forum. Thank you!

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Re: slope 1   [#permalink] 15 Jul 2009, 18:55
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