Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

alamojoe9

  • 3 years ago

Where does the graph of y = 2x2 + x − 15 cross the x-axis?

  • This Question is Closed
  1. malexander
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    is that 2x^2 +x -15 you mean @alamojoe9 ?

  2. alamojoe9
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yes

  3. malexander
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    if so..its a parabola...Let y = 0 and solve for x...then once you get your two factors, you plug in those numbers into your parabola and that would give you the y for both points...then thats your answer

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

    factor your expression and set to zero: 2x^2 + x -15 = 0 (2x - 5)(x + 3) = 0 solve for x and that's where your graph crosses the x axis.

  5. 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