Given y = x2 + 4x – 12 determine the following. Does the graph open up or down? How do you know?.

Given y = x2 + 4x – 12 determine the following. Does the graph open up or down? How do you know? Explain whether the graph has a maximum or minimum point. Find the vertex and x-intercepts of the graph.

Given y = x2 + 4x – 12 determine the following. Does the graph open up or down? How do you know?