The turning points of the given graph has the coordinates as; (-1, 2.5) and (0, -2.5)
How to draw a quadratic graph?
The quadratic function is given as;
y = x³ + 3x² – x – 3
We have seen the graph being attached to this answer. From the graph, we can see the turning points which is a point of the graph where the graph changes from increasing to decreasing (rising to falling) or decreasing to increasing (falling to rising).
The turning points of the given graph has the coordinates as;
(-1, 2.5) and (0, -2.5)
Read more about Quadratic Graph at; https://brainly.com/question/1523847
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