SOLUTION: Function or Not a Function
x+y=9
and
x^2+y^2=1
Algebra.Com
Question 699378: Function or Not a Function
x+y=9
and
x^2+y^2=1
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
this is linear equation, graph is a line, no repeating; so, it a function
and
...here you have a circle
In any Cartesian coordinate system,a circle does not correspond to a function.
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