Which of the following does not represent a function?

graph of a negative parabola oriented about the y axis with y intercept at positive 6
graph of an absolute value function oriented about the y axis
graph of an ellipse with x intercepts negative 8 and positive 8
graph of a negative parabola oriented about the y axis with y intercept at positive 6

Question

Which of the following does not represent a function?
 	
	graph of a negative parabola oriented about the y axis with y intercept at positive 6
	graph of an absolute value function oriented about the y axis
	graph of an ellipse with x intercepts negative 8 and positive 8
	graph of a negative parabola oriented about the y axis with y intercept at positive 6

anonymous · Answer

@Nnesha

perl · Answer

an ellipse is not a function, (it looks like a flattened circle) , because for some x values there are two y values  . it does not pass the vertical line test