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anonymous

  • 4 years ago

Solve the equation and identify the shape.. plz help if you can 7y^2+x^2=64 x+y=4

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  1. dumbcow
    • 4 years ago
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    looks like an ellipse and a line

  2. myininaya
    • 4 years ago
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    the shape of each equation? the first one is an ellipse since both the coefficient of x^2 and y^2 have sign same but have differenet coefficient and yeah second one is a line go cow! :)

  3. dumbcow
    • 4 years ago
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    what are we solving for? or do you need them in standard form

  4. myininaya
    • 4 years ago
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    \[x=4-y => 7y^2+(4-y)^2=64\]

  5. myininaya
    • 4 years ago
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    \[7y^2+16-8y+y^2=64\]

  6. myininaya
    • 4 years ago
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    \[8y^2-8y+16-64=0\]

  7. myininaya
    • 4 years ago
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    \[8y^2-8y-48=0\] \[y^2-y-6=0\]

  8. anonymous
    • 4 years ago
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    its supposed to be like this |dw:1327621440662:dw|

  9. myininaya
    • 4 years ago
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    \[(y-3)(y+2)=0\] you should be able to take it from here right?

  10. anonymous
    • 4 years ago
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    yes thank you for your help :)

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