Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

Sophia.13

  • one year ago

• When should you solve a system of equations by graphing? • When should you solve a system of equations by elimination? • When should you solve a system of equations by substitution?

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

    If you are looking at linear equations it really its at your choice... you can solve any system of equations by any of the methods... quadratic or higher and a linear, I use substitution most of the time... but again, this can be done graphically you can solve any equation graphically e.g. x + 3 = 5 just graph y = x + 3 and y = 5... it will show you x = 2

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

    Depends on what the question looks like. Elimination is usually the easiest, but it gets tricky sometimes. I only use graphing as a last option and professor dont usually ask this

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

    Those wt really know how to answer them. asked me , i dont really know how to answer them each individually

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

    If you're given: `x` = 3 + y 2x + 5y = 7 Use `substitution` since in this case, x is isolated and you can substitute the expression for x in the first equation into the second equation. However if you're given: x `+ 2y` = 4 3x `- 2y` = 5 Use `elimination` since you can simply add both equations together to get rid of the y variable.

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

    If given `y` = 2x - 3 `y` = 5x - 4 Then use `graphing` since both equations are in the form y = mx + b. You can simply enter both equations into your graphing calculator to find the (x,y) intersection point.

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

    Thank you.

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

    • Attachments:

Ask your own question

Ask a Question
Find more explanations on OpenStudy

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.