A graphing calculator is recommended. Graph the given functions on a common screen. How are these graphs related? y = 2 x, y = ex, y = 5 x, y = 20 x All of these graphs approach as x→−∞, all of them pass through the point (x, y) = ( ), and all of them are increasing and approach ∞ as x → ∞. The larger the base, the the function increases for x > 0, and the it approaches 0 as x → −∞.