A speeding motorist slams on the brakes when she sees an accident directly ahead of her. The distance she has traveled seconds after braking is shown in the table.
Time (seconds)
Distance (feet)
  1. Enter the data into your calculator and create a scatterplot. Fit a quadratic regression equation to the data and graph the equation on the scatterplot.
    Regression equation: Use for the time in seconds.
  2. Use your regression equation to find the vertex of the parabola:
    What do the coordinates represent in terms of the problem?