Ex 4.2, 4 - Chapter 4 Class 9 Linear Equations in Two Variables (Important Question)

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Ex 4.2, 4 Find the value of k, if x = 2, y = 1 is a solution of the equation 2π‘₯+3𝑦=π‘˜Given πŸπ’™+πŸ‘π’š=π’Œ Since, π‘₯=2 and 𝑦=1 is a solution so it will satisfy its equation Putting π‘₯=2 and 𝑦=1 in (1) 2(𝟐)+3(𝟏)=π‘˜ 4+3=π‘˜ 7=π‘˜ ∴ π’Œ=πŸ• …(1)

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo