Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

otakugirl Group Title

Select the equations that are parallel and perpendicular to y =1/4x + 7 and that pass through the point (-8, 9). a) parallel: y =1/4x - 11 perpendicular: y = -4x + 23 b) parallel: y = -4x + 11 perpendicular: y =1/4 x - 4 c)parallel: y = 4x - 7 perpendicular: y =1/4x - 7 d)parallel: y =1/4x + 11 perpendicular: y = -4x - 23

  • one year ago
  • one year ago

  • This Question is Closed
  1. otakugirl Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    help?

    • one year ago
  2. aroub Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Oh my x_x This what I'm going to do, I'll explain to you the first one and you do the rest and I'll check them, deal? :)

    • one year ago
  3. otakugirl Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    okay deal :)

    • one year ago
  4. aroub Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Do you know what does parallel and perpendicular mean here?

    • one year ago
  5. otakugirl Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    a little bit not so much :/

    • one year ago
  6. aroub Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    It's okay, what do you know?

    • one year ago
  7. otakugirl Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    okay i know that perpendicular lines intersect at a 90 degree angle and parallel lines dont intersect

    • one year ago
  8. aroub Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Okay, the meaning in here for both is all about the slope. Parallel means that they have the same slope while in perpendicular the slope is the opposite reciprocal of the original slope.

    • one year ago
  9. otakugirl Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    ohh okay i got it.

    • one year ago
  10. aroub Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    For a) parallel: y =1/4x - 11 ; (-8,9) slope= 1/4 ; x=-8 , y=9 ( I got x and y from (-8,9) ) To solve such problem you will have to use the slope intercept form, which is: y=mx+b, where m is the slope. Now all you got to do is substitute to find b. => 9=1/4(-8)+b 9=-2+b 11=b since we found" b" we can now find the new equation which is parallel to the original equation. How? By using the slope intercept form, again! y=mx+b, you always leave the x and y! Just substitute for m and b. => y=1/4x+11 Got it?

    • one year ago
  11. otakugirl Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    yes thank you so much :)

    • one year ago
  12. aroub Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Can you do the perpendicular now? They're the exact same steps but with different slopes of course. Remember the slope of the perpendicular is the opposite reciprocal.

    • one year ago
  13. aroub Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    I say -4, agree?

    • one year ago
  14. otakugirl Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    yes now i can do it and i agree with -4

    • one year ago
  15. aroub Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Great ^_^

    • one year ago
    • Attachments:

See more questions >>>

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.