The equation for an exponential function is w(x) = 2 · (0.4)x 5. Graph the function. The exponential function w of x increases through the ordered pairs 0, negative 3 and 1, negative 2.2 and 2, negative 1.08 and 3,0.488. A dashed horizontal line passes through y equals negative 5. The exponential function w of x increases through the ordered pairs 0,7 and 1,7.8 and 2,8.92 and 3,10.488. A dashed horizontal line passes through y equals 5. The exponential function w of x decreases through the ordered pairs negative 1,10 and 0,7 and 1,5.8 and 2,5.32. A dashed horizontal line passes through y equals 5. The exponential function w of x decreases through the ordered pairs negative 2,7.5 and negative 1,0 and 0, negative 3 and 1, negative 4.2 and 2, negative 4.68. A dashed horizontal line passes through y equals negative 5.