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olve the following simultaneous equations graphically1) 2x + 3y = 12 ; x - y = 1 |
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Answer» 2x+3y=12—(i)x-y=1—(ii)from (i)2x=12-3yx=(12-3y)/2let us take three solution of this equation1. put y=0 we getx=(12-0)/2=12/2=62. put y=2 we getx=(12-6)/2=6/2=33. put y=4 we getx=(12-12)/2=0/2=0therefore the three solutions of (i) are (6,0),(3,2) and(0,4)Next from (ii)x=y+1let us take three solution of this equation1. put y=0 we get x=0+1=12. put y=2 we getx=2+1=33. put y=4 we getx=4+1=5therefore the three solutions of this equation are (1,0),(3,2) and (5,4)When we plot these points in graph we see that the intersection point of the two lines of the euation is (3,2)so the solution of this equation isx=3 and y=2 u the answer I don't know what to do x=3. y=2 is correct answer. X = 3, y = 2 is correct answer 2x+3y=12 x-y=1x=1+y 2+2y+3y=125y=10y=2 & x=2+1 =3 |
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