If y^2 + 3y - 18 ≥ 0, which of the following is true?

Correct Answer is : y ≥ 3 or y ≤ - 6

CMAT 2018 Solved Question Paper

Question : 17 of 100

Marks: +1, -0

y^2

+ 3y - 18 ≥ 0, which of the following is true?

Solution:

y^2

+ 3y - 18 ≥ 0
⇒

y^2

+ 6y - 3y - 18 ≥ 0
⇒ (y + 6 )(y -3 ) ≥ 0
⇒y ≤ - 6, y ≥ 3
⇒ y ≥ 3 or y ≤ - 6

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