anonymous
  • anonymous
Which is greater? Line l has slope > 1. A. Slope of line p B. -1
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
|dw:1439402347948:dw|
anonymous
  • anonymous
The answer is A i need to know why
anonymous
  • anonymous
@phi

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phi
  • phi
the slope of p is -1/m (negative reciprocal of line 1 which I assume as slope "m") we know this because the two lines are perpendicular (from the little square they drew)
anonymous
  • anonymous
Is that some type of rule?
anonymous
  • anonymous
Rule with the perpendicular?
phi
  • phi
line 1 has slope m> 1 so let's pick m= 2 which is bigger than 1 (as a "for example") the line p has slope -1/2 which is bigger -1 or -1/2 -1/2 is bigger (I hope that is clear)
phi
  • phi
**Is that some type of rule? *** more like a fact... we can prove it.
anonymous
  • anonymous
wait let me clarify this. So for perpendicular slopes it's always the opposite right? if the slope is 1/3 then the perpendicular slope is -3 am i right?
phi
  • phi
yes. the only time we run into a problem is a horizontal line with slope 0 and a vertical line with "undefined" slope. we could use the rule and get -1/0 but we are not allowed to divide by 0, so we just say "undefined" but other than that it's for example 1 , -1 2 , -1/2 -3/2 , 2/3 -5, 1/5 when you multiply them you will get -1
anonymous
  • anonymous
OHHHHHHHHHHHHHHHHHHHHHHHHHHHHH okay i got it now <3333333333333333

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