anonymous
  • anonymous
what is the equation of the line that passes through (1,3) and (-2,-3)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
can you find the slope first? then find the y intercept?
anonymous
  • anonymous
i suggest you plot the points and connect them with a line
anonymous
  • anonymous
but you can just use this . slope = (y2 - y1) / (x2 - x1)

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anonymous
  • anonymous
so is the slope 2?
anonymous
  • anonymous
I don't know how to do any of this that why I needed help.
anonymous
  • anonymous
yep slope is 2, so have you ever seen this y = mx + b?
anonymous
  • anonymous
m is the slope b is the y intercept
anonymous
  • anonymous
so can you plug the slope you found into that equation?
anonymous
  • anonymous
yea I know but what is the y intercept?
anonymous
  • anonymous
we are going to find that after you plug in the slope
anonymous
  • anonymous
so y=2?
anonymous
  • anonymous
y = 2x + b, 2 = m = slope
anonymous
  • anonymous
okay what do I do after that?
anonymous
  • anonymous
ok so we have some points on the line pick one of them to use
anonymous
  • anonymous
pick either one
anonymous
  • anonymous
(1,3)
anonymous
  • anonymous
ok so we have (1, 3) that is the point where x = 1 and y = 3, so lets plug 1 and 3 into this equation y = 2x + b
anonymous
  • anonymous
so 1=b?
anonymous
  • anonymous
correct so now you have everything you need for the equation y = 2x + 1
anonymous
  • anonymous
okay thankyou!
anonymous
  • anonymous
yw

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