Q28 of 70 Page 269

The weight of a book is three times the weight of a note book. Express this fact in the form of an equation in two variables.

Let the weight of the notebook be x


And,


Let the weight of the book be y


Then, the weight of a book is three times the weight of a note book, i.e.,


y = 3×x or y = 3x


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Write each of the following in the form ax + by + c = 0:

(i) 3x = 5 (ii) 5y = 4

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Check which of the following are solutions of the equation 2x – 3y = 6.

(i) (3, 0) (ii) (0, 2)


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