anonymous
  • anonymous
how do you identify a slope on a coordinate graph?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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blurbendy
  • blurbendy
You take two points on the line made by the slope. Then calculate the slope by taking (Y2 - Y1) / (X2 - X1) The slope is the ratio between the difference in the two y points and the difference in the two x points.
anonymous
  • anonymous
so on my homework it says rise: -5 and run:-5
anonymous
  • anonymous
i dont understand what that means i am only in 7th grade lol

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blurbendy
  • blurbendy
You know when you look at the coordinate graph you have numbers on the x-axis and numbers on the y-axis?
anonymous
  • anonymous
yes
blurbendy
  • blurbendy
Okay, on the x-axis, move over 5 "spaces", then go up 10 "spaces"
anonymous
  • anonymous
but why ten because the rise is-5 and the run is -5
blurbendy
  • blurbendy
Yes, but we need to different points in order to calculate the slope of a line.
blurbendy
  • blurbendy
So now we have (5, 10) and (-5,-5) okay?
blurbendy
  • blurbendy
two*
anonymous
  • anonymous
ok
blurbendy
  • blurbendy
Y2 - Y1 / X2 - X1 just means this: Take the SECOND y-point from (5, 10) and (-5, -5) which is -5 and subtract it from the FIRST y-point from (5, 10) and (-5, -5) which is 10
blurbendy
  • blurbendy
so we end up with -5 - 10 = -15 Do you follow so far?
anonymous
  • anonymous
i do but i don't understand how you got 5 and 10 from
blurbendy
  • blurbendy
It's just a point I made up so that we can take the slope of a LINE (you need two points in order to do this). I'll come back to your question in a second (it will make sense trust me :) )
anonymous
  • anonymous
yeah i get this but on my homework i just don't know where to get the other pairs cuz it doesn't tell
blurbendy
  • blurbendy
Oh, I see.
blurbendy
  • blurbendy
So it just says rise = -5, and run = -5?
blurbendy
  • blurbendy
They got those numbers from doing what we're doing Y2 - Y1 / X2 - X1. It looks like that is already solved for you!
blurbendy
  • blurbendy
So that means we have -5 / -5
blurbendy
  • blurbendy
and the slope is the ratio of RISE / RUN
blurbendy
  • blurbendy
So the slope = 1 !!! Understand?
anonymous
  • anonymous
ohhhhh thxxxxx

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