Question

write an equation in slope intercept form of the line that contains (-1,7) and (3,-9)..............................help me!!!!

Answer 1

Hi!\[\Huge{\color{RED}{\mathbb{Welcome \quad To \quad OpenStudy!}}}\]

Answer 2

Slope-intercept form: y = mx+b, where m is the slope of the line and b is the y-intercept.
So use the equation above to find your answer just plug in the values given.

Answer 3

What did you get?

Answer 4

so will it be y=5/3x+-2

Answer 5

Correct. replace that +- with just a -. y=5/3x-2

Answer 6

thank you so much for your help and time!!!!

Answer 7

No problem.

Answer 8

i just posted another question can you help me

Answer 9

hello

Answer 10

Post the link to your question on here. I can't find it on the list of questions. Is it in math?

Answer 11

yes its http://openstudy.com/updates/50a68fe3e4b082f0b852b2be

Answer 12

That's the link for this same question.

If you need to post a new question, click "Close". Then you'll be able to ask another question.

Answer 13

ok i did it it shoul be up there

Answer 14

I'm sorry! Is this your question: write an equation in slope intercept form of the line that contains (-1,7) and (3,-9) ?

I didn't notice you had edited your original question!

Answer 15

First, find the slope.
(-1,7) and (3,-9)
\[m = \frac{ y2 - y1 }{ x2 - x }\]\[m = \frac{ -9 - 7 }{ 3 - (-1) } = \frac{ -9 - 7}{ 3+1 } = \frac{ -16 }{ 4 }= -4\]Slope is -4
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You have a point (-1, 7) and the slope(-4) so use the Point-Slope formula.
y - y1 = m(x - x1)

y - 7 = -4(x - (-1))
y - 7 = -4(x + 1)
\[Distrbute\]y - 7 = -4x - 4
\[Add \quad 7\]y = -4x + 3