A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

14. For the function rule y = -2x - 3, provide the x-y coordinates of the y-intercept and the x-intercept. Show your work.

  • This Question is Closed
  1. LynFran
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    to find the x coordinate we let y=0 likewise, to find the y coordinate we let x=0

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

    so, y=-2(0)-3 and 0=-2x-3..just solve to get the respective coordinates

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

    y=-3 -2x-3=0, -2x=-3 x=-3/-2 x=3/2

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

    understand?

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

    Sorry i went to the bathroom ^ ^;

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

    ok...

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

    so what are the x intercept as in (x,y)... and the y intercept as in (x,y) coordinates

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

    1,2,3 for x and y is 5, 7, 9?

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

    no...please read my 3rd comment

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

    Alright.

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

    ok lets go over x.. intercept

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

    y = -2, 0, 3 x 0 = - 2x -3.

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

    when we want to find the x intercept of a function we let y=0 ie (x,0) im change the function and replacing it with y=5x-5 ok as and example so, 0=5x-5..we replace y and put 0 we now solve for x 5x-5=0 5x-5+5=+5 5x=5 we then divide both sides of the equation by 5 to solve for x 5x/5=5/5 x=1..

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

    Alright thanks. Do i need to make a graph?

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

    not always only if the question ask you to...so our x intercept for the given example would be (1,0)

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

    Alright. Thanks a lot you'r a self savor :)

  17. LynFran
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    do u understand the y intecept part...if not i will go it over ok

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

    It intercepts at 0 right?

  19. LynFran
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    we let the x intercept =0 ie (0,y) and we solve for y...what would be the y intercept for the given example i just give?

  20. LynFran
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    this one y=5x-5

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

    x is equal to 0?

  22. LynFran
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yes we let x=o and solve for y y=5(0)-5

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

    Wouldn't that be 0 too?

  24. LynFran
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    no

  25. LynFran
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    y=5*0-5 y=0-5 y=-5

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

    Okay. Think i got it now 5*0 = 0 and 0 subtracted by -5 is just negative 5.

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

    -5*

  28. LynFran
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yes now put it in coordinate form..(x,y) we get..

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

    x= 0 and y= -5

  30. LynFran
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    very good (0,-5)

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

    Thanks. I suck at math. XD

  32. LynFran
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    no problem but remember that was the intercepts for the example i give not for the problem you give ok

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

    Yeah totally understand. That's why i try in solve them before i post them unless i really have no clue where to start.

  34. LynFran
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    ok just to note also in the case of sketching a graph..the x intercept is where the line/curve cuts the x axis on the graph...and the y intercept is where the line/curve cuts the y axis on the graph.

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

    Alright kool.

  36. 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.