Definition 1: Since the y values increase as the x values increase in the example above, this is what we call exponential (The graph goes up the hill from left to right) QUESTION: In the exponential function y = 3*, the y-values can never equal or be less than Definition 2: Since the y-value can NEVER equal zero in this function, there is a horizontal at y = 0. Ex 2: By looking at the graph above, list the domain and range of the function y = 3* DOMAIN: RANGE: