Describes the graph of the equation x = -2. Is the equation a function

A. Horizontal line; no

B. Horizontal line; yes

C. vertical line; no

D. Vertical line; yes

Respuesta :

Here there's only one variable:  x.  We are told that x = -2.  Find -2 on the x-axis and draw a vertical line thru this point.  That's it.  Vertical line, NO, because when x=-2, more than one y-value is associated with it.