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11-39.

Given the quadratic function

  1. Without drawing a graph, tell the coordinates of the vertex and tell if the vertex represents the maximum or minimum value of the function.

    The graphing form of a quadratic is where the vertex is at the point .
    If the vertex is the highest point on the graph, then it is a maximum.
    If it is the lowest point on the graph, then it is a minimum.

  2. Use your graphing shortcuts to draw a graph and verify your answer to part (a).

    A four quadrant coordinate plane with the x axis scaled from negative 5 to 5 and the y axis scaled from negative 5 to 5. There is a point at (2, comma 6).