The minimum of a parabola is located at (–1, –3). The point (0, 1) is also on the graph. Which equation can be solved to determine the a value in the function representing the parabola?

A parabola with vertex (−1, −3) can be written in vertex form as y = a(x + 1)² − 3. Since the graph also passes through (0, 1), substitute x = 0 and y = 1 to get 1 = a(0 + 1)² − 3. This is choice A.

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