anonymous
  • anonymous
Write an equation of the line in point slope form, that passes through the two given points (-2, 15) and (9, -18)? (Not sure how to do this... help?)
Mathematics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
OakTree
  • OakTree
So do you know the equation for slope?
anonymous
  • anonymous
Yes y2 - y1 over x2 - x1
OakTree
  • OakTree
Right. So what do you get for slope?

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

anonymous
  • anonymous
Just a minute...
anonymous
  • anonymous
-33/11
OakTree
  • OakTree
Right, now simplify that.
anonymous
  • anonymous
-3
OakTree
  • OakTree
Good. So now we have the equation y=-3x+b. Good so far?
anonymous
  • anonymous
Yup
OakTree
  • OakTree
Great. Now we choose a point and plug it in. Take the first one. We have 15=-3(2)+b. Now solve for b. What do you get?
OakTree
  • OakTree
Correction: 15=-3(-2)+b. Left out a negative. Sorry.
anonymous
  • anonymous
No problem... Do I multiply -2 by -3 first or divide -3 from both sides?
OakTree
  • OakTree
Multiply.
OakTree
  • OakTree
You should then get 15=6+b, and then subtract 6.
anonymous
  • anonymous
Ok Thanks So it's 9 = b
OakTree
  • OakTree
Right. So our solution is y=-3x+6.
anonymous
  • anonymous
But it's in point slope form not slope intercept?
OakTree
  • OakTree
Oh, sorry. So then we want to write it in point slope. Can you do that?
anonymous
  • anonymous
I'm not sure how really.
OakTree
  • OakTree
It's just\[y - 15 = -3(x+2)\]That's it.
anonymous
  • anonymous
Ok thank you I get that!
OakTree
  • OakTree
Great. Glad to help. Thanks for the medal!
anonymous
  • anonymous
No problem, um I have another quick question.
OakTree
  • OakTree
Fire away.
anonymous
  • anonymous
So if we were using point slope form and we knew the slope was 3 and 2 points were (8, -8) how would we write that?
anonymous
  • anonymous
Would it be y - 8 = 3 (x + 8) ?
OakTree
  • OakTree
We would write \[y+8 = 3(x-8)\]You messed up your signs.
anonymous
  • anonymous
Oops
anonymous
  • anonymous
Thank you I meant to have it the other way around!
OakTree
  • OakTree
Right.

Looking for something else?

Not the answer you are looking for? Search for more explanations.