Reassessment Requirement (Page 3 of 3) in pdf

Reassessment Requirement Page 3

3.3 Reassessment Requirement

NAME: _____________________ Period: _____

*Section III: Lesson 3.3 (Fitting Quadratic Functions to Data)*

Find an approximate quadratic model in vertex form for the data by estimating the coordinates of the vertex and one

other point. Then SKETCH a graph of the model.

Vertex Form: _____________________

Find an approximate quadratic model in intercept form for the data by estimating the coordinates of the x-intercepts

and one other point. Then SKETCH a graph of the model.

Intercept Form: __________________

Intercept Form: ___________________

Ellen and Kelly test Ellen’s new car’s brakes in an empty parking lot. They mark braking

line where Ellen applies the brakes. Kelly then measure the distance from that line to

the place where Ellen stops for speeds from 5 miles per hour to 25 miles per hour.

Speed (mi/h)

Stopping Distance (ft)

3.47

7.14

13.31 21.98 33.15

5. Use the quadratic-regression feature on a graphing calculator to find an approximate

quadratic function model for the data.

Standard Form: ____________________________

Reassessment Requirement Page 3