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alwaysasking

  • 3 years ago

find y for the linear equations 2x-3y=6 and find y for -10x=5y

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  1. wannabegurl
    • 3 years ago
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    duno

  2. JayDS
    • 3 years ago
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    rearrange for y. 1) 2x-3y=6 2x -6 = 3y 2/3x-6/3 = y y=2/3x -2 2) -10x = 5y try this one yourself.

  3. alwaysasking
    • 3 years ago
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    ok wannabeagirl then go away

  4. wannabegurl
    • 3 years ago
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    \[gj\]

  5. wannabegurl
    • 3 years ago
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    retriceole

  6. alwaysasking
    • 3 years ago
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    @jayds i got for 1 x-1.3

  7. alwaysasking
    • 3 years ago
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    i really don t under stand

  8. JayDS
    • 3 years ago
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    find y means that you have to isolate y, do you see how I did it above? we want y = ............... Lets use an example say 5x + y = 9 I want to find "x" this time not y, so I just bring the y to the right hand side and bring the 9 to the left hand side. 5x - 9 = -y y = -5x + 9 do you understand?

  9. alwaysasking
    • 3 years ago
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    so if i put -1 in the place of x what will it be

  10. JayDS
    • 3 years ago
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    sorry, I do not understand what you are trying to say.

  11. alwaysasking
    • 3 years ago
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    so instead of y=2/3x -2 what will it equal if \[ y=2/3\times-1 -2\]

  12. alwaysasking
    • 3 years ago
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    you know what im saying

  13. JayDS
    • 3 years ago
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    ok, substitution of x=-1 inside the equation is what u mean. then you just solve it. y=2/3 x -1 -2 y= -2/3 -2 y=-3.667

  14. alwaysasking
    • 3 years ago
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    okkkkkkkkkkkk now i understand thanks so much!

  15. JayDS
    • 3 years ago
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    it's ok, medal thanks :P

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