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.

RELATED QUESTIONS

Function or Not a Function x+y=9 and x^2+y^2=1 and... (answered by lwsshak3)
Is y=|x|+2 a function? Why or Why... (answered by crissy)
y = |x| is a function or... (answered by Edwin McCravy)
Draw the graph of x=y^2 and discuss if it is a function or not (answered by bucky)
Is 5/x- y/4=1 a function or... (answered by josgarithmetic)
Problem: Determine whether the equation defines y as a function of x. Explain why or why... (answered by josgarithmetic)
Determine whether or not the equation represents y as function of x? Explain your... (answered by josgarithmetic)
State whether or not the given equations determines y as a function of x 1. X+Y=1 2.... (answered by MathLover1,ikleyn)
Decide whether or not the equation defines y as a function of x. {{{x-y^2=-2}}} What... (answered by josgarithmetic)