anonymous
  • anonymous
find the slope of the line perpendicular to the line through the points (18,9) and (9,2)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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Mertsj
  • Mertsj
Can you find the slope of the line between the two given points?
anonymous
  • anonymous
yes just not sure how to
Mertsj
  • Mertsj
Subtract the y values. Subtract the x values. put the first number over the second. That is the slope.

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Mertsj
  • Mertsj
What did you get?
anonymous
  • anonymous
-7/9 but it is perpendicular
Mertsj
  • Mertsj
Did you do the subtraction in the same order?
Mertsj
  • Mertsj
|dw:1328140568833:dw|
anonymous
  • anonymous
yes
Mertsj
  • Mertsj
So that is the slope of the given line.
Mertsj
  • Mertsj
To find the slope of the perpendicular, tip that number unside down and change it to its opposite.
Mertsj
  • Mertsj
I means upside down
anonymous
  • anonymous
so -9/7
Mertsj
  • Mertsj
|dw:1328140718490:dw|
Mertsj
  • Mertsj
Yep
anonymous
  • anonymous
can u help me with one more

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