korbinwilkinsen korbinwilkinsen Today at 9:50 PM Mathematics Answered WILL GIVE A BRAINLIEST!!! In a quadratic function of the form ax^2+bx+c, which of the following is not true? A. The y-intercept is c. B. If a is positive, the parabola opens up. C. The vertex has an x-coordinate of -b/2a. D. The axis of symmetry is the line y=-b/2a.