Consider the parabola given by the equation: y = 2x - 4x-6 Does the graph open up or down? Does the graph have a maximum or a minimum? O opens up, minimum O opens down, minimum O opens down, maximum opens up, maximum The vertex is The y-intercept is (0, Find the two values of x that correspond to the x-intercepts of the parabola and write them as a list, separated by commas: x=