The correct answer is this one: "<span>B) The graphs open downward. " Negative quadratic functions will give you a downward graph. </span> The equations y = -1/2x^2 + 2 y = -2x^2 + 3 y = -3/4x^2 <span>y = -4/5x^2 - 5 </span> are all negative. So they are facing downward.