Q.1. Draw the graph of each of the following linear equations in two variables:

(i) x + y = 4 (ii) x - y = 2 (iii) y = 3x (iv) 3 = 2x + y

Solution:

  1. Given equation is x + y = 4.

    We can tabulate the solutions as follows,

    x

    0

    4

    y

    4

    0

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  1. Given equation is x - y = 2

We can tabulate the solutions as follows,

x

0

2

y

-2

0

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  1. y = 3x

We can tabulate the solutions as follows,

x

0

1

y

0

3

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  1. 3 = 2x + y

We can tabulate the solutions as follows,

x

0

1

y

3

1

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