Question

solve graphically : 2x+y=10; 2x-y=2

Answer 1

for graph


2x+y=10
y=10-2x---1st equation


2x-y=2
2x-2=y-----2nd equation


now write x an below that y and take a number and write it as x and with that no take first equation and like that take 2 more numbers and do the same thing with 2nd equation.



simultaneous equation

2x+y=10
2x-y=2



now cancel +y and -y and then add 2x and 2x.then add 10 and 2

which will be seen as
4x=12
x=4/12
x=3

take any equation to search y .I'll prefer 1st equation soo
2x+y=10
2×3+y=10
6+y=10
y=10-6
y=4





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Answer 2

Answer:

Step-by-step explanation:

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