Question

solve x+y=14 and x-y=4 and hence find the value m for which y=mx-4​

Answer 1

Answer:

x=9

y=4

y=mx-4

5=m9-4

9=m9

m=9/9

so the value of m is 1

Answer 2

Answer:

x= 9

y= 5

m= 1

Step-by-step explanation:

using the equation x+y=14

y=-x+14  substitute the y in the equation of x-y=4

so it will be like this:

x-(-x+14)=4 solve for x so the value of x is 9

using the value of x substitute it in x+y=14

so it will be like this:

9+y=14 so y = 5

y=mx-4

5=m(9)-4

9=9m

m=1

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