Substituting (2, -1) into 2mx + 3y = 7 yields 4m – 3 = 7, which gives m = 2.5. Substituting into 4x + ny = -10 gives 8 – n = -10, resulting in n = 18.
Ganita Manjari part 2 Chapter 13.2 Solutions
Class 9 Ganita Manjari Part 2 Chapter 13 Page 93 Question Answer
Since (2, -1) satisfies both equations, substitute x = 2 and y = -1 into each. For 2mx + 3y = 7, we get 2m(2) + 3(-1) = 7, leading to 4m – 3 = 7, which simplifies to m = 2.5 or 5/2. For 4x + ny = -10, we get 4(2) + n(-1) = -10, simplifying to 8 – n = -10, which gives n = 18.
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