Question

Value of y for the equations 3x+4y=9 and 6x +8y =5 is 1 2 0 False Solutions​

Answer 1

Step-by-step explanation:

3x+4y=9,6x +8y =5 is 1 2 0

$9x + 13y = 14 \: - \: 120 \\ 9x + 13y = 106$

Answer 2

Step-by-step explanation:

The equations are

3x+4y−k=0

9x+12y−6=0

Here, a

1

=3,b

1

=4,c

1

=−k

and a

2

=9,b

2

=12,c

2

=−6

For the system to have infinite solutions condition is

a

2

a

1

=

b

2

b

1

=

c

2

c

1

⇒

9

3

=

12

4

=

−6

−k

12

4

=

−6

−k

⇒

3

1

=

−6

−k

⇒3k=6

⇒k=2

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