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If x - y = 8, then which of the following must be true? 1. Both x and y must be positive for any value of x and y.2. If x is positive, y must be negative for any value of x and y.3. If x is negative, y must be positive for any value of x and y. Select the correct answer using the code given below. 1. 1 only2. 2 only3. Both 1 and 24. Neither 1 nor 2 nor 3 |
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Answer» Correct Answer - Option 4 : Neither 1 nor 2 nor 3 Given : x - y = 8 Calculations : For this question, we must check each option For option (1) ⇒ x - y = 8 at x = 4 and b = -4, so option 1 does not satisfy. For option (2) ⇒ x - y = 8 at x = 12 and y = 4, so option 2 also does not satisfy. For option (3) ⇒ x - y = 8 at x = -1 and y = -9, so option 3 also does not satisfy. So no option follows. ∴ Option 4 will be the right choice. |
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