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12-95.
  1. A parabola passes through the points (0, 5), (2, 1), and (6, 17). Homework Help ✎

    1. What is its equation?

    2. Where is its vertex?

Substitute each point into the equation y = ax2 + bx + c.
You will have a system of three equations with three unknowns.
One of your equations should be 1 = 4a + 2b + c.

Average the x-intercepts or complete the square.