what would the answer be in substitution

Question

y=x+2

2x+y=8

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Answer 1

y=x+2

2x+y=8

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Let us substitute y in the second equation with the first equation...

2x + (x+2) = 8

2x + x + 2 = 8

3x + 2 = 8

-2 -2

3x = 6

(divide by 3 on both sides to isolate x)

x = 2

Now we need to find y. Let us use the first equation given to us to plug in x and find y...

y = x + 2

y = (2) + 2

y = 4

We have concluded, through substitution, that x=2 and y=4.

Answer 2

x=2, y=4

graphically it's the point (2,4)

graph the 2 lines, that's the point where they intersect

y=x+2

y=-2x+8

x+2 =-2x+8

3x =6

x =6/3 =2

y=x+2 = 2+2 = 4