Final answer:
Near a function's vertical asymptotes, its value becomes very close to positive or negative infinity.
Step-by-step explanation:
Near a function's vertical asymptotes, its value becomes very close to positive or negative infinity. This is because as x approaches the value of the vertical asymptote, the function approaches infinity in the positive or negative direction.
For example, consider the function y = 1/x. As x approaches 0 from the right side, the function becomes very large and positive. As x approaches 0 from the left side, the function becomes very large and negative. Therefore, the value of the function near the vertical asymptote approaches positive or negative infinity.