Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

alainabbyboo22

  • 4 years ago

Using the graph, which of these ordered pairs is the best estimate of the solution of the system y = 3x + 2 and y = -1/4 x + 1?

  • This Question is Closed
  1. alainabbyboo22
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    A. (0.5, 0.5) B. (-0.3, 1.1) C. (1.2, 0.8) D. (0.8, -0.5)

  2. alainabbyboo22
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    1 Attachment
  3. dumbcow
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    set the 2 equations equal and solve for x 3x+2 = -1/4x +1

  4. alainabbyboo22
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    So basically just put the numbers in for x, and whichever equation equals the same for both, is my answer?

  5. alainabbyboo22
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    ???

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

    yeah you could do that too :)

  7. alainabbyboo22
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Okay thanks! :)

  8. alainabbyboo22
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    I tried plugging in all the numbers for x and none of them equal the same.. or am I doing the wrong thing for this problem? I don't get it.

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

    Try plugging in x = -0.3 again 3(-.3) +2 = ? -1/4(-.3) +1 = ?

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

    there is some rounding error

  11. alainabbyboo22
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    3(-.3)+2 = 1.7 -1/4(-.3)+1 = 0.7

  12. alainabbyboo22
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    So now what?

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

    3*(-.3) = -.9

  14. alainabbyboo22
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Okay but my answer choices available are: A. (0.5, 0.5) B. (-0.3, 1.1) C. (1.2, 0.8) D. (0.8, -0.5)

  15. hoblos
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    you must solve it graphically so you only need to find the point of intersection between the two lines y = 3x + 2 & y = -1/4 x + 1 from the graph then the solution is (-0.3, 1.1)

  16. alainabbyboo22
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Oh!!!!! Well that would've helped me a long time ago. Lol thank you so much hoblos! :) It means a lot! :)

  17. hoblos
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    my pleasure XD

  18. 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