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Question

Check which of the following are solutions of an equation x+2y=4?
(i) (0, 2) (ii) (2, 0) (iii) (4, 0) (iv) (2,32) (v) (1, 1) (vi) (-2, 3)

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Solution

Given equation isx+2y=4
(i) Put the value x=0 and y=2 we get
0+2×2=4
4=4
Then both sides are equal then (0,2) is the solution of equation x+2y=4
(ii) Put the value x=2 and y=0 we get
2+2×0=4
24
Then both sides are not equal then (0,2) is not the solution of equation
x+2y=4
(iii) Put the value x=4 and y=0 we get
4+2×0=4
4=4
Then both sides are equal then (4,0) is the solution of equation x+2y=4
(iv)x+2y=4
Put x=2,y=32 we get
2+2(32)=4
232=4
224
Then both sides are not equal then (2,32) is not the solution of equation
x+2y=4
(v) Put the value x=1 and y=1 we get
1+2×1=4
34
Then both sides are not equal then (1,1) is not the solution of equation
x+2y=4
(vi) Put the value x=-2 and y=3 we get
2+2×3=4
4=4
Then both sides are equal then (-1,3) is the solution of equation
x+2y=4


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