anonymous
  • anonymous
Find the slope and y intercept 7-1/2y=2x
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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shadowfiend
  • shadowfiend
Do you know of a form of equations where you can easily get the slope?
anonymous
  • anonymous
do you mean y=mx+b
shadowfiend
  • shadowfiend
RIght.

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shadowfiend
  • shadowfiend
So if we can solve the above equation for y, then we might be closer to getting the slope and y-intercept, right? Can you solve the equation for y?
anonymous
  • anonymous
Well I do know that you take 7 and subtract that from both sides geting -1/2y=2x-7 right?
shadowfiend
  • shadowfiend
Exactly, that's the first step.
anonymous
  • anonymous
okay then after that im confused
anonymous
  • anonymous
well 2 would be the slope right?
shadowfiend
  • shadowfiend
So then you need to get the y alone. That means you have to get rid of the -1/2 that's next to it.
anonymous
  • anonymous
okay so 1/2+ -7 = 3.5
shadowfiend
  • shadowfiend
Close. Because y is multiplied by the -1/2, we have to divide both sides by -1/2.
shadowfiend
  • shadowfiend
Dividing by -1/2 is the same as multiplying by -2.
anonymous
  • anonymous
oh thats where i always mess up
shadowfiend
  • shadowfiend
So we would have: -2(-1/2y) = -2(2x - 7)
anonymous
  • anonymous
-4x+14
shadowfiend
  • shadowfiend
Exactly :)
shadowfiend
  • shadowfiend
So now what's the slope?
anonymous
  • anonymous
YAY haha the slope would be -4
shadowfiend
  • shadowfiend
Right! And the y-intercept?
anonymous
  • anonymous
14
shadowfiend
  • shadowfiend
Rock it :)
shadowfiend
  • shadowfiend
Ok, so now let's look at your other question and see if we can apply the same idea.
anonymous
  • anonymous
okay sounds good
anonymous
  • anonymous
(-2,8); 7x=5y+6
shadowfiend
  • shadowfiend
Well, hehe, I was going to actually go to that problem, so we keep things organized :)
anonymous
  • anonymous
o okay ill head over to it sorry

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