Identify Functions (Graphs) worksheet with six graphs and their corresponding equations, showing whether each graph represents a function.

Graphs of six different equations, each plotted on a coordinate grid, with the task to determine if each represents a function. The equations are: y^4 = -x, y^2 = -x, y^-1 = -x, x = y^-1, y^2 = -x, and y = x^-2. The answer key indicates whether each graph represents a function (yes or no).