Which functions have a horizontal asymptote? Y = f(x) y = h(x) y = g(x) y = k(x) On a coordinate plane, 4 exponential functions are shown. Y = f (x) approaches the x-axis in quadrant 1 and increases exponentially in quadrant 2. It goes through (0, 1) and (negative 4, 5). Y = g (x) approaches the x-axis in quadrant 1 and increases exponentially in quadrant 2. It goes through (0, 1) and (negative 1, 3). Y = h (x) approaches the x-axis in quadrant 2 and increases exponentially in quadrant 1. It goes through (0, 1) and (1, 3). Y = k (x) approaches the x-axis in quadrant 2 and increases exponentially in quadrant 1. It goes through (0, 1) and (4, 5).