If then the value of x - y is 1. -3 2. 1 3. 3 4. 5

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KnowledgeBoat · Accepted Answer

Given, By definition of equality of matrices we get, ⇒ x + 2y = 0 (...Eq 1) ⇒ 3y = -3 or y = -1 ⇒ 4x = 8 or x = 2 Putting the value of x = 2 and y = -1 in Eq 1 ⇒ x + 2y = 0 ⇒ L.H.S. = 2 + 2(-1) = 2 - 2 = 0 = R.H.S. Since, x = 2 and y = -1 satisfies Eq 1 ∴ x = 2, y = -1 and x - y = 2 - (-1) = 2 + 1 = 3. ∴ Option 3 is the correct option.

Mathematics

If then the value of x - y is 1. -3 2. 1 3. 3 4. 5

Matrices

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