144 ☼ ☢ Name:

  1. The graph plots three data sets for three different possible mathematical models. One data set is plotted as squares, one as circles, and a third as triangles.
    Graph with shapes fed by different functions background rectangle major grid lines axes data points as rectangles leftmost data set data points as circles data points as triangles data points as rectangles leftmost data set text layers Data independent variable dependent variable y-axis labels 0 20 40 60 80 100 x-axis labels 0 10 20 30 40 50
    1. __________ Which shape plots data modeled by a linear mathematical trend line model?
    2. __________ Which shape plots data modeled by a non-linear mathematical trend line model?
    3. __________ Which shape plots data that is randomly distributed and cannot be modeled by a trend line model?
    4. __________ For the data that plots linearily, make a mathematical estimate of the slope.
    5. __________ For the data that plots linearily, make a mathematical estimate of the y-intercept.
  2. Sketch a direct quadratic mathematical model on the graph provided below with an initial data value of (0, 0). Grid 12 x 10 on the thirties background rectangle major grid lines axes text layers Quadratic Mathematical Model independent variable x dependent variable y y-axis labels 0 15 30 45 60 75 90 105 120 135 150 x-axis labels 0 1 2 3 4 5 6 7 8 9 10 11 12