Model Functions

A student runs two times around a running path at a local park.  Each lap is 3 km.  The student completes the first lap in 20 minutes.  The student then sits on a bench and rest for 5 minutes before completing the second lap in 25 minutes.  Which graph bests represents the student's motion?

• F

• G

• H

• J

This graph represents the speed of an object, s(t), after t seconds. Which of the following might represent what is happening in section D of the motion graph?

• A car starts from rest and accelerates quickly.

• A runner travels at a constant speed down a straightaway.

• A rocket travels faster and faster.

• A train brakes as it heads into the train station.

Would the slope of the function from x = 1 to x = 2 be positive or negative? 

• positive

• negative

What is the difference in the y-intercepts of the functions 

• unit

• units

• units

• units

Which function best models the data?

• Linear

  y = mx + b

Which function best models the data?

• Linear

  y = mx + b

What does it mean by, "which function MODELS the data in the table?"

• when you type the table and the answer choices into Desmos, the lines should be parallel

• The table should be a line and the answer should be a parabola

• when you type the table and the answer choices into Desmos, the lines should be on top of each other

• when you type the table and the answer choices into Desmos, the lines should intersect only once

Which function best models the data?

• Linear

  y = mx + b

Which function best models the data?

• Linear

  y = mx + b

Which of the following represents a function?