andersonleathia andersonleathia
  • 22-02-2016
  • Mathematics
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What is y=1/2x +2 y= -x +5 using subsitution

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apologiabiology
apologiabiology apologiabiology
  • 22-02-2016
y=1/2x+2
y=-x+5
subsitute since they both equal y
1/2x+2=y=-x+5
1/2x+2=-x+5
subtract 2 from both sides
1/2x=-x+3
multiply both sides by 2
x=-2x+6
add 2x to both sides
3x=6
divide both sides by 3
x=2
subsitue
y=-x=5
y=-2+5
y=3

x=2 and y=3
solution in (x,y) form is (2,3)
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