SOLUTION: would an elipse be a function? why or why not?

Question 215994: would an elipse be a function? why or why not?
Answer by RAY100(1637) (Show Source): You can put this solution on YOUR website!
a function is limited to a relationship that has one y for each x
.
This can be checked with the vertical line test,,where a vertical line is passed thru the figure, and for every x position, there should be only one y value.
.
.
If we look at the shape of an ellipse, we will always have two values of y for every one value of x,
.
.
Therefore an ellipse is NOT a function
.

RELATED QUESTIONS
would an elipse be a function? why or why... (answered by vleith)

Is y=|x|+2 a function? Why or Why... (answered by crissy)

Can the perimeter of an isosceles right triangle be a whole number? Why or why... (answered by richard1234)

Make an argument on whether the Law of Sines could be utilized to solve for a right... (answered by ikleyn)

Is this an example of an exponential function? y = 4800(0.75)^x Why or why... (answered by vleith)

Given f(x)=3x+4 1. Is f(x) a function? Why or why not? 2. Is f -1(x) a function?... (answered by stanbon)

Would opening an account using simple interest benefit the customer? Why or why... (answered by josgarithmetic)

Is x^2 + 3y^2 = 9 a function? Why or Why... (answered by richwmiller)

Is this relation a function? Why or why not? (0,3), (2,4), (-2,9),... (answered by lwsshak3)