Suppose the graph of y = ax² + 6x + c has x-intercepts at

Last updated: 7/12/2022

Suppose the graph of y = ax² + 6x + c has x-intercepts at the points (-2, 0) and (4,0). (a) Find the coordinates of the vertex and the equation of the axis of symmetry. (b) Find the coordinates of the y-intercept and tell whether the parabola opens upward or downward.