## taylorlynn337 Group Title write an equation in slope intercept form of the line that contains (-1,7) and (3,-9)..............................help me!!!! one year ago one year ago

1. jazy Group Title

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

2. philo1234 Group Title

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.

3. philo1234 Group Title

What did you get?

4. taylorlynn337 Group Title

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

5. philo1234 Group Title

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

6. taylorlynn337 Group Title

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

7. philo1234 Group Title

No problem.

8. taylorlynn337 Group Title

i just posted another question can you help me

9. taylorlynn337 Group Title

hello

10. jazy Group Title

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

11. taylorlynn337 Group Title
12. jazy Group Title

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.

13. taylorlynn337 Group Title

ok i did it it shoul be up there

14. jazy Group Title

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!

15. jazy Group Title

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 -------------------- 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