Question

2. Solve 2x + 3y = 11 and 2x - 4y = - 24 and hence find the value of 'm' for whi
y=mx+3.
3. Form the pair of linear equations for the following probleme and find​

Answer 1

Answer:

here is it.. of 1 st part..

Step-by-step explanation:

2x + 3y = 11 .......(i)

2x - 4y = -24......(ii)

solving these equations by substitution method,

Now, from (ii), we get,

2x-4y=-24

2x=-24+4y

x=(-24+4y)/2

x=-24/2+4y/2

x=-12+2y...........(iii)

Put this value of x in (i), we get,

2(-12+2y) + 3y = 11

-24+4y+3y=11

7y=11+24

7y=35

y=35/7

y=5

now put this value of y in (iii)

=-12+2y

=-12+2(5)

=-12+10

=-2

y=mx+3 {y=5,x=-2)

5=m(-2)+3

5=-2m+3

5-3=-2m

2=-2m

2/2=-m

1=-m

-1=m

Hope it helps