Hello, I can't figure out how to find the rule function when the vertex or intercept is not clearly marked. What are the steps for that? I can clearly see that two points are (-3.5, -2) and (0.5, -2). Here is the pic of the graph.

1 1. If the vertex of the parabola y = x' + bx + c is at (-4, 10), find b and c. Find the rule of the quadratic function f ( x) = ax + bx + c with the given graph: 12. 13