Question

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Answer 1

Step-by-step explanation:

2x + 3y = 11 (eq. 1 )

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

From eq. 2

2x - 4y = -24

2(x - 2y) = -24

x-2y = -24/2

x-2y = -12

x= -12 + 2y (eq.3)

Put value of x in eq. 1

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

-24 + 4y + 3y = 11

7y= 11 + 24

7y = 35

y= 35/7

y= 5

Put value of y in eq. 3

x= -12 + 2× 5

= -12+10

x= -2

y= mx + 3

put x= -2 and y = 5

5= m × -2 +3

5-3 = -2m

2 = -2m

m = 2/-2

m = -1

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