Question

8. a. Add together 2x +5y and 6x -18y.​

Answer 1

Step-by-step explanation:

Correct option is

B

parallel lines

The equation can be written as

2x+5y−3=0 and 6x+15y−12=0

Here a

1

=2,b

1

=5,c

1

=−3 and a

2

=6,b

2

=15,c

2

=−12

a

2

a

1

=

6

2

=

3

1

b

2

b

1

=

15

5

=

3

1

c

2

c

1

=

−12

−3

=

4

1

∴

a

2

a

1

=

b

2

b

1



=

c

2

c

1

Hence the given pair of linear equation represents parallel line.

Answer 2

Solution:-

2x + 5y + 6x - 18y

= 2x + 6x + 5y - 18y

= 8x - 13y

_____________

• Just add like terms.
• Unlike terms cannot be added nor subtracted.