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10-99.

    Match each equation below with its corresponding graph. Can you do this without making any tables? Explain your selections.

  1. A downward parabola with a vertex at (0, comma 2).

  1. A downward parabola with a vertex at (0, comma negative 2).

  1. An upward parabola with a vertex at (0, comma negative 2).

Determine the direction of the opening and -intercept for each of the given equations.