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What are the key features of the graphs exponential functions? Explain how you find each key feature and what happens to the graphs if you were to add or subtract a constant term.
The graphs of all exponential functions have these characteristics. They all contain the point (0, 1), because a0 = 1. The x-axis is always an asymptote. They are decreasing if 0 < a < 1, and increasing if 1 < a.
