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starrhunter

  • 2 years ago

what would the graph look like for this soe? 2x + 3y = –3 x – y = –4

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  1. Keroro
    • 2 years ago
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    Two straight lines?

  2. starrhunter
    • 2 years ago
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    i knew they were both linear but i need to know where they cross

  3. Keroro
    • 2 years ago
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    oh, find y. i.e.x-y=-4 =>-y=-4-x =>y=4+x substitute this in your other eqn. and solve for x

  4. Keroro
    • 2 years ago
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    alternatively, make y the subject of both given equations and make them equal to each other.

  5. Shayaan_Mustafa
    • 2 years ago
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    Hi starrhunter :) How are you dear :D

  6. Shayaan_Mustafa
    • 2 years ago
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    Solve both equations simultaneously with some points. You will get your intersection point then.

  7. starrhunter
    • 2 years ago
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    i am well thank you @Shayaan_Mustafa thank you for your help

  8. kevsturge
    • 2 years ago
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    2x+3y=-3 x-y=-4 2x-2y=-8 5y=5 y=1 x+1=-4 x=-3 x=-3 y=1

  9. kevsturge
    • 2 years ago
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    start by doubling x-y=-4 and subtract equations

  10. strenesmee
    • 2 years ago
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    intersection points are y=1 and x=-3 the the graph looks like this |dw:1338929983883:dw|

  11. starrhunter
    • 2 years ago
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    thank you! <3

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