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Q13 of 36 Page 1

If , then value of y is ___________

Given:


To Find: Value of y


From the matrix representation we get,


x + 2y = 5 and 2x + y = 4


Eliminating x from both the equations we get,


⇒ 2x + y – 2x – 4y = 4 – 10


⇒ -3y = -6


⇒ y = 2


More from this chapter

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11

If f be the greatest integer function defined as f(x) = [x] and g be the modulus function defined as g(x) = |x|, then the value of g of is ___________

12

If the function is given to be continuous at x = 1, then the value of k is ___________

14

If tangent to the curve y2 + 3x – 7 = 0 at point (h, k) is parallel to line x – y = 4, then value of k is ___________

OR


For the curve y = 5x – 2x3, if x increases at the rate of 2units/sec, then at x = 3 the slope of the curve is changing at ___________


15

The magnitude of projection of on is ___________

OR


Vector of magnitude 5 units and in the direction opposite to is ___________


Questions · 36
Sample Paper 2020
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