A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 5 years ago

I have a few problems where you are given a point and an equation and you have to find an equation that is either parallel or perpendicular. I just don't get it at all...

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

    parallel : the same slope perpendicular : slope flip and opposite site

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

    I know, but what am I to do with the points I'm given? Do I plug them in the equation or what? I'm confused.

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

    give me a example

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

    Okay. One of them is Find an equation of the line meeting the specified conditions. Write the final answer in slope-intercept form. Containing the point (2,6) and parallel to y=-4x-1

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

    y=-4x-1 if parallel use the same slope : -4 and creative another line y -6 = -4(x - 2) y -6 = -4x +8 y = -4x +8 +6 y = -4x + 14 now line : y=-4x-1 parallel to line y = -4x + 14

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

    -4 is slope 14 is y intercept

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

    how do you get the slope when there's only one given pair of points?

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

    use the frist equation slope y=-4x-1 slope is -4

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

    Okay. That makes so much more sense now. Thanks.

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

    The slope between two points is \(\frac{y_2-y_1}{x_2-x_1}\)

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

    one given pair use slpoe = 6/2 or 3

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

    If you have the equation for a line y = mx + b, m is the slope.

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

    So, let's say I have one that has the points (0,-5) and perpendicular to y=6x + 8. How would I go about solving that?

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

    What is the slope for that line y=6x+8?

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

    given what I said before about m?

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

    y=6x + 8 perpendicular use 6 flip = 1/6 and negative side is : - 1/6 y- (-5) =-1/6( x- 0) y +5 = -1/6x y = -1/6x -5 line: y=6x + 8 is: perpendicular to y = -1/6x -5

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

    Thanks so much. That has helped a lot.

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

    you are welcome

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

    Now, what if I have a problem where it only has y? For example, points (0,-9) and parallel to 4y=8

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

    Solve for y.

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

    If 4y=8 then y=?

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

    I know y=2 but I'm lost as to what to do next

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

    Ok, well. Going back to the form y=mx + b, what is your m?

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

    would it be 0? or undefined?

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

    It would be 0. y = 0x + 2 = 2

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

    y=2 is a straight horizontal line that goes through the y axis at y=2 and doesn't increase or decrease with a change in x.

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

    So the slope is 0. Now to find a new line that is parallel means that the new line has the same slope.

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

    But instead of going through y=2, it goes through y=-9

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

    I ended up with y=0x -9 but I'm not sure if that's right?

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

    Yes, now simplify.

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

    4y=8 y = 2 slope =0 y-9= 0(x-0) y = 9 line 4y=8 parallel to line y = 9

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

    Should be y=-9

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

    y=-9 if you want perpendicular to line 4y=8

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

    No. y=-9 is parallel to the line y=2. They both have a 0 slope. One intersects (0,-9) the other intersects (0,-9)

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

    One intersects(0,-9) and the other intersects(0,2) rather

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

    I also got y=-9

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

    A perpendicular line would have an undefined slope -1/0

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

    I forgot negative 9 y=-9 is right amswer

  39. 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.