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Source: Beat The GMAT — Data Sufficiency |
Both are sufficient.
From q it self : y^2=9-x
From 1: x<8>1 again by plugin we can derive x=5 here.
From q it self : y^2=9-x
From 1: x<8>1 again by plugin we can derive x=5 here.
Ans: D
Condition 1) By plugging x values (less than 8 and greater than 0)
we get only one value of y i.e, 2 for x=5
Condition 2) given y > 1 => 9-x > 1 => x < 8
And again by plugging in we get y=2 for x=5
Hence D
Condition 1) By plugging x values (less than 8 and greater than 0)
we get only one value of y i.e, 2 for x=5
Condition 2) given y > 1 => 9-x > 1 => x < 8
And again by plugging in we get y=2 for x=5
Hence D
