The pair of equations x+y=0 and x+y=-7 has
a) one solution
b) two solution
c) many solution
d) no solution
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The answer is b) two solution
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d) because from equation 1 we got
x+y=0
therefore
y=x-0
and if we substitude the value in equation two than
x+y=-7
x-0-x=-7
x and x cancel out
therefore
0is not eqaul to -7
by this we can say that this equation has many ans
expect this x can have any value and y can also have any value.
thanks
MARK AS BRAINLY
x+y=0
therefore
y=x-0
and if we substitude the value in equation two than
x+y=-7
x-0-x=-7
x and x cancel out
therefore
0is not eqaul to -7
by this we can say that this equation has many ans
expect this x can have any value and y can also have any value.
thanks
MARK AS BRAINLY
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