rebecca18coronado rebecca18coronado
  • 25-10-2019
  • Mathematics
contestada

the slope of a line is 10/7. what is the slope of a line perpendicular to this line?​

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jimthompson5910 jimthompson5910
  • 25-10-2019

Answer:  -7/10

Explanation:

The perpendicular slope is the negative reciprocal of the original. That means you flip the fraction to get from 10/7 to 7/10, then you flip the sign from positive to negative, going from 7/10 to -7/10.

Your math teacher or textbook may use the phrasing "flip the fraction and flip the sign" as a way to help you remember.

Note how 10/7 times -7/10 is equal to -1. This applies to any pair of perpendicular slopes as long as neither line is vertical.

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