Question

Q4.Solve 5x + y = 10 and x − y =-22 and hence find the value of ‘m’ for whichy = mx + 3. *

X=0 ,Y=22

X= -2 ,Y= 20

X= 1,Y=10

None of t

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Answer 1

Answer:

X= -2; Y= -20; m=-17/2

Step-by-step explanation:

Equation 1:

5x+y=10

let x be -2

therefore,

5(-2)+y=10

-10+y=10

y=10+10

y=20

Equation 2:

x-y=-22

therefore,

(-2)-(+20)=-22

-2-20= -22

Equation 3:

y=mx+ 3

therefore,

(20)=m(-2)+3

20=-2m+3

20-3= -2m

17=-2m

therefore,

m=-17/2

Hope this helps!

Answer 2

Answer:

X= -2 ,Y= 20

Step-by-step explanation:

X=?

m+x+3=150

x=?

x=?