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Mathematics, 26.07.2019 18:20 samuelmarchettp9i3sa

The product of the slopes of two non-vertical perpendicular lines is always - 1. it is not possible for two perpendicular lines
to both have a positive slope because the product of two positives is positive. so for the product of the slopes to be -1, one
of the slopes must be positive and the other negative
select the best answer from the choices provided
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The product of the slopes of two non-vertical perpendicular lines is always - 1. it is not possible...

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