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Is x - y > −10 ?

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Is x - y > −10 ?  [#permalink]

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New post 20 Aug 2019, 17:25
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Question Stats:

55% (01:28) correct 45% (02:01) wrong based on 29 sessions

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Is \(x - y > −10\) ?

(1) \(5x + 2y > −10\)

(2) \(2y + x > −10\)

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Re: Is x - y > −10 ?  [#permalink]

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New post 20 Aug 2019, 18:47
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Mahmoudfawzy83 wrote:
Is \(x - y > −10\) ?

(1) \(5x + 2y > −10\)

(2) \(2y + x > −10\)


Is \(x - y > −10\) ?

(1) \(5x + 2y > −10\)
NOT SUFFICIENT

(2) \(2y + x > −10\)
NOT SUFFICIENT

Combining (1) & (2)
There is no -y multiple. The equations can not be subtracted.
NOT SUFFICIENT

IMO E

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Re: Is x - y > −10 ?  [#permalink]

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New post 20 Aug 2019, 22:03
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We can even plot the graphs of three lines and as the areas don't match, none of the condition is sufficient to answer the question

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Re: Is x - y > −10 ?   [#permalink] 20 Aug 2019, 22:03
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