A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

Decide which of the following are solutions to this system of equations: y = 2x + 3 and y = x2 - 5 a. (4,11) b. (1,-4) c. (-3,-1) d. (-2,-1)

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

    How would you solve the equation ?

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

    the answer choice that I have is both a and c

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

    @Koikkara

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

    @Owlcoffee

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

    \[y=2x+3\] \[y=x^2-5\] Since both equations are equal "y", must mean that both left sides of each equation must have the same values, so all we do is replace the given equations: \[x^2-5=2x+3\] And order it up to the general form: \[x^2-2x-8=0\] And now, all you have to do is solve that quadratic equation using the general formula.

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

    How many solutions are there to the system: \begin{array}{l}y = 1 + 2x + {x^2}\\y = 1 - x\end{array} Write your answer as an integer. could you help me with this one I have 2 for the answer

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

    The amount of solutions are always determined by the variable of highest exponent: we wil ldo the same as we did previously: \[1-x=1+2x+x^2\] and order it: \[x^2+3x=0\] Since there is a x^2 it must mean that the system has two solutions.

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

    Find the solution to the system using a table. Write your answers as ordered pairs using parentheses. If there are two solutions, separate the two solutions with a comma. Do not put a space between them. y = 3 y = 3x this one I have (0,0) for the answer

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

    Well, on that excercise you have to draw two columns and then assign up to three values to "x", let them be 0,1 and 2. The solution will be the value of "x" that has the same value on both functions.

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

    ok

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

    would it be ),1 and 0,3

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

    0,1

  13. 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.