Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

kryton1212

  • 3 years ago

The x-coordinate of the point of intersection of the straight lines 2x+ay-7=0 and ax-y-5=0 is 2. If a is an integer, find the value of a.

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

    2x+ay-7=0 -(1) ax-y-5=0 -(2) From the second equation: y = ax-5 -(3) Sub. (3) into (1) 2x+a(ax-5)-7=0 -(4) Sub x=2 into (4), then solve a I think it should work.

  2. kryton1212
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    is it 3?

  3. kryton1212
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    thank you I got it:)

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

    I think so!

  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