anonymous
  • anonymous
Help!!: Write the equation of a line that is parallel to the line connecting (2,5) and (-1,-4)
Mathematics
  • Stacey Warren - Expert brainly.com
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jamiebookeater
  • jamiebookeater
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sleepyhead314
  • sleepyhead314
Hi there @angelmaxine and Welcome to OpenStudy! :) Sorry for getting here a little late, I can try to help you with your problem:
sleepyhead314
  • sleepyhead314
An equation of a line that is parallel to another line would have the Same Slopes sooo we should first try to find the slope between the points (2, 5) and (-1, -4)
anonymous
  • anonymous
@sleepyhead314 it's okay, and thank you. I'm not sure how to maneuver open study. But I need help with pre calculus!/:

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anonymous
  • anonymous
So we would use y1-y2/x1-x2?
sleepyhead314
  • sleepyhead314
yes! :) that's right what do you think we would get?
sleepyhead314
  • sleepyhead314
it is ok that you might not know how to get around the site a friend of mine created a tutorial on how to use the site that you can check out sometime ^_^ http://openstudy.com/study#/updates/543de42fe4b0b3c6e146b5e8
sleepyhead314
  • sleepyhead314
\[slope = \frac{ y_2 - y_1 }{ x_2 - x_1 } = \frac{-4 - 5}{-1 - 2}\]
anonymous
  • anonymous
So.. Positive 3??
sleepyhead314
  • sleepyhead314
that's perfect! :) great job!! then we can plug that into the equation y = mx + b
anonymous
  • anonymous
That's where I keep getting stuck.
sleepyhead314
  • sleepyhead314
that's ok :) we know that m = slope and b = y-intercept right?
sleepyhead314
  • sleepyhead314
in this question "b" can be anything because it just wants the line to be parallel
sleepyhead314
  • sleepyhead314
does this make sense @angelmaxine ? :)
anonymous
  • anonymous
No :/
sleepyhead314
  • sleepyhead314
ok, what part do you not get? I'll try to explain better :)
anonymous
  • anonymous
Do I just pick one set ? Like (2,5) or (-1,-4) to plug in?
sleepyhead314
  • sleepyhead314
we would plug in the slope = 3 that we got for "m" so y = 3x + b ^ right?
sleepyhead314
  • sleepyhead314
then "b" can be any number you want it to be for this question :)
sleepyhead314
  • sleepyhead314
for example y = 3x + 1 would work y = 3x + 7 would also work :P
sleepyhead314
  • sleepyhead314
this works because all they wanted was the equation of a line that is Parallel and all a line needs to be Parallel is the same slope that's why any "b" would work :)
sleepyhead314
  • sleepyhead314
so your answer can be as simple as y = 3x + 1
anonymous
  • anonymous
How'd you get 7??

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