Vertical? ?line? ?t? ecide whether gr?aph A, ?gr?aph B, ?or both graphs represent functions.
Step-by-step solution Step 1 of 2 Consider a given graph According to the vertical line test: A graph is a function if and only if every vertical line intersects the graph at most once. If vertical line intersects the graph more than once this mea ns that for one value of there are more that one value of f(x), which is not property of function.