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

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.

What are the following algebraic equations. you need to post those if you want the answer