Find the solution of the equation 2x + y = 4
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2x+y=4...(i)
⇒y=4−2x
If x=0,y=4−2(0)=4−0=4
x=1,y=4−2(1)=4−2=2
x=2,y=4−2(2)=4−4=0
x 0 1 2 3
y 4 2 0 −2
(i) A B C −2
2x−y=4...(ii)
⇒y=2x−4
If x=0,y=2(0)−4=0−4=−4
x=1,y=2(1)−4=2−4=−2
x=2,y=2(2)−4=4−4=0
x 0 1 2 3 4
y −4 −2 0 2 4
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