A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 5 years ago

5x+9y+4=0 has the x intercept -4/5 and the y intercept -4/9 It defines a straight line of slope ???????

  • This Question is Closed
  1. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Put the equation in slope-intercept from (meaning solve it for y). The slope is then the coefficient of the x term.

  2. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Sorry, previous post should have said slope-intercept "form", not "from"

  3. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    is slope mx+b

  4. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    slope is m. b is the y-intercept

  5. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok so how would i set this up as a formula

  6. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    If I understand your question correctly, you just need to re-arrange the equation you already have to put it in slope-intercept form. First, you need to eliminate any terms that don't include "y" from the left side of the equation, so you would subtract "5x" and "4" from both sides. Second, You would divide both sides by 9 to eliminate the 9 on the left. That would put your equation in slope-intercept form.

  7. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    At that point, you can identify "m", which is the slope of your line. "m" is the number or fraction in front of the x term when the equation is in slope-intercept form.

  8. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok so the equation right now should be y= -5x-4

  9. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    After subtraction, you would have: 9y=-5x-4 Then, after division, you would have: y=-5/9 x - 4/9

  10. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok so the slope would be -5/9?

  11. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Correct

  12. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok thanks that makes sense

  13. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    5x+9y+4=0 \[y=(-5x-4)/9\] \[y= (-5/9)x - 4/9\] m= -5/9 b = -4/9

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

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.