Identify Functions (Graphs) worksheet asking to determine if each graph represents a function using the vertical line test.
Graphs of six mathematical equations, each showing a different function or relation, with a vertical line test applied to determine if they represent a function. The graphs are labeled 1 to 6, with equations such as y^4 = -x, y^2 = -x, y^-1 = -x, x = y^-1, y^2 = -x, and y = x^-2.