halexiwon2Karenc halexiwon2Karenc
  • 11-04-2017
  • Mathematics
contestada

Which two linear equations represent perpendicular lines? select two choices?

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Sxerks Sxerks
  • 11-04-2017
In order for two linear lines to be perpendicular, the product of their gradient must be -1.

Let's take y = x + b and y = -x + b
This is already in the form: y = mx + b, where m is 1 and -1 respectively.
Since the product of their gradient is -1, they are said to be perpendicular.
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