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anonymous

  • one year ago

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  1. anonymous
    • one year ago
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    Substitute x and y as 2 and 1 and then note down that equation. Do the same with 3 and 4 . What you will then get are simultaneous linear equations in two variables. Solve them for x1 and y1 and then substitute the found values in the original eqaution

  2. anonymous
    • one year ago
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    would my answer be d?

  3. Astrophysics
    • one year ago
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    Well first find the slope, using the following formula: \[m = \frac{ y_{2}-y _{1} }{ x _{2}-x _{1} }\] where your coordinates represent \[(x_1,y_1)~~\text{and}~~(x_2,y_2)\] Once you manage to get that, plug in m and your first coordinates in the point - slope form: \[y-y _{1}=m(x-x _{1})\]

  4. anonymous
    • one year ago
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    y=3x-5?

  5. Astrophysics
    • one year ago
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    Which one from your options?

  6. anonymous
    • one year ago
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    is my answer d?

  7. Astrophysics
    • one year ago
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    No, please go over what I've said, it will take you 5 minutes to do, rather than wasting time to guess.

  8. anonymous
    • one year ago
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    m=3

  9. Astrophysics
    • one year ago
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    Yes! Now you have the slope

  10. Astrophysics
    • one year ago
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    Now do the next step

  11. anonymous
    • one year ago
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    y−1=3(x−2) so my answer is a?

  12. Astrophysics
    • one year ago
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    Yes!

  13. anonymous
    • one year ago
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    Thnx

  14. Astrophysics
    • one year ago
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    Wasn't that so much better than just guessing? :)

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