A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

y = 3x + 3 y = x − 1 Explain how you will solve the pair of equations by substitution. Show all the steps and write the solution in (x, y) form.

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

    can you substitute the value of y from one equation in for y in the other equation?

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

    yes? i think so

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

    ok try it

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

    what do you get?

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

    y= y-1?

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

    it says y = 3x + 3 and y = x - 1, so if y is equal to both of those things can you set those things equal to each other?

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

    yes because they are equal.. i think so, math is my worst:(

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

    its fine, so set them equal to each other, what do you get?

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

    y=3y+3??

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

    ok lets try a simpler problem, then come back to this one

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

    if y = 10 and y = x then doesn't 10 = x

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

    yes

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

    ok so you have y = 3x + 3 and y = x - 1 so what is 3x + 3 equal to 3x + 3 = ?

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

    |dw:1433948530931:dw|

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

    do you see how i substituted the value of y from one equation into y in the other, that is substitution

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

    this is what I normally use y = y regardless of how it is expressed example 10 = 6 + 4 and 10 = 8 + 2 10 = 10 so 6 + 4 = 10 + 2

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

    @leah.mariexx if you have questions please ask

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

    now you have one equation with one unknown solve for this variable then use this value in either of the expressions to get the value of the other variable

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

    for this problem continue from the drawing by @billj5 find x replace x in the expression for y and find y solution (x, y)

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

    im sorry @billj5 my dad needed the computer thanks for your help

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

    np, yw

  22. 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.