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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

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths and Science at Teachoo.