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The graphs of the linear equations 4x - 2y = 10 and 4x + ky = 2 intersect at a point (a, 4). The value of k is equal to:1. -42. 43. -34. 3 |
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Answer» Correct Answer - Option 1 : -4 Given : There are two linear equations intersect at a point (a, 4) 4x - 2y = 10 4x + ky = 2 Calculations : 4x - 2y = 10 ....(1) 4x + ky = 2 ....(2) Solving equations (1) and (2) we will get, -2y - ky = 8 -y (2 + k) = 8 put y = 4 as intersecting points were (a,4) -4 (2 + k) = 8 ⇒ k = -4 ∴ The value of the k will be -4
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