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

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, Social Science, Physics, Chemistry, Computer Science at Teachoo.