SOLUTION: "Solve each system by substitution." y=-4x+16 y=2x+4 I changed y=-4x+16 to -4x+y=16 then I put the bottom equation (y=2x+4) into that so: -4x+(2x+4)=16 and got x=-6 so I put

Algebra ->  Expressions-with-variables -> SOLUTION: "Solve each system by substitution." y=-4x+16 y=2x+4 I changed y=-4x+16 to -4x+y=16 then I put the bottom equation (y=2x+4) into that so: -4x+(2x+4)=16 and got x=-6 so I put       Log On


   



Question 483997: "Solve each system by substitution."
y=-4x+16
y=2x+4
I changed y=-4x+16 to -4x+y=16 then I put the bottom equation (y=2x+4) into that so:
-4x+(2x+4)=16 and got x=-6 so I put that into y=2x+4 so y=2(6)+4 and got y=16 but I don't think it's right. (-6,16)

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
y=-4x+16

2x+4 =-4x+16

2x+4x =16-4

6x =12

x=12/6

x=2

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y=2x+4

y=2(2)+4

y=4+4

y=8

So x = 2 and y = 8 giving us the ordered pair (2,8)