Question

7. Write five different linear equations in two variables and find three solutions for each of
them?
​

Answer 1

Answer:

1. x+y=4

I) 0+y =4

y =4+0

y =4

ii) x+y=4

x+0=4

x =4-0

x =4

iii) x+y=4

2+y =4

y =4-2

y =2

2. x-y=2

I) 0-y =2

-y =2-0

-y =2

-2 =y

ii) x-y=2

2-y =2

-y =2-2

-y =0

0 =y

iii) x-y=2

3-y =2

-y =2-3

/-y =/-1

y = 1

3. x=4y

I) x =4(0)

x=0

ii) x=4y

x=4(1)

x=4

iii) x=4y

x=4(2)

x=8

4. y=3x

I) y=3(0)

y=0

ii) y=3x

y=3(1)

y=3

iii) y=3x

y=3(2)

y=6

5. 2x+y=7

I) 2(0)+y =7

0+y =7

y =7

ii) 2x+y=7

2(1)+y=7

2+y=7

y=7-2

y=5

iii) 2x+y=7

2(2)+y=7

4+y=7

y=7-4

y=3