Unit 4 Lesson 7 Practice

The temperature was recorded at several times during the day. This function gives the temperature in degrees Fahrenheit, 'n' hours since midnight. Shown is a graph for this function.

For each time interval listed, select all intervals that have a positive rate of change.

• from n=1 to n=5

• from n=5 to n=8

• from n=10 to n=20

• from n=15 to n=17

• from n=20 to n=24

Tags

CCSS.HSF.IF.B.4

The graph shows the total distance, in feet, walked by a person as a function of time, in seconds.

​​​​​​Was the person walking faster between 20 and 40 seconds or between 80 and 100 seconds?

• The person was walking faster between 20 and 40 seconds

• The person was walking faster between 80 and 100 seconds

Tags

CCSS.HSF.IF.B.4

The graph shows the total distance, in feet, walked by a person as a function of time, in seconds.

Was the person walking faster between 0 and 40 seconds or between 40 and 100 seconds?

• The person was walking faster between 0 and 40 seconds

• The person was walking faster between 40 and 100 seconds

Tags

CCSS.HSF.IF.B.4

The height, in feet, of a squirrel running up and down a tree is a function of time, in seconds.

Here is a statement describing the squirrel's movement during a given interval of time.

Match the description with a statement about the average rate of change of the function for that interval.

"The squirrel runs up the tree very fast."

• The average rate of change is negative

• The average rate of change is zero

• The average rate of change is small and positive

• The average rate of change is large and positive

Tags

CCSS.8.F.B.4

CCSS.HSF.IF.B.6

The height, in feet, of a squirrel running up and down a tree is a function of time, in seconds.

Here is a statement describing the squirrel's movement during a given interval of time.

Match the description with a statement about the average rate of change of the function for that interval.

"The squirrel starts and ends at the same height"

• The average rate of change is negative

• The average rate of change is zero

• The average rate of change is small and positive

• The average rate of change is large and positive

Tags

CCSS.8.F.B.4

CCSS.HSF.IF.B.6

The height, in feet, of a squirrel running up and down a tree is a function of time, in seconds.

Here is a statement describing the squirrel's movement during a given interval of time.

Match the description with a statement about the average rate of change of the function for that interval.

"The squirrel runs down the tree"

• The average rate of change is negative

• The average rate of change is zero

• The average rate of change is small and positive

• The average rate of change is large and positive

Tags

CCSS.8.F.B.4

CCSS.HSF.IF.B.6

The height, in feet, of a squirrel running up and down a tree is a function of time, in seconds.

Here is a statement describing the squirrel's movement during a given interval of time.

Match the description with a statement about the average rate of change of the function for that interval.

"The squirrel runs up the tree slowly"

• The average rate of change is negative

• The average rate of change is zero

• The average rate of change is small and positive

• The average rate of change is large and positive

Tags

CCSS.8.F.B.4

CCSS.HSF.IF.B.6

The graph shows a picture of the temperature changes on the same winter day. The temperature in degrees Fahrenheit is a function of the hours passed since noon.

Find the average rate of change between noon and 2pm.

• 2 degrees per hour

• 1 degree per hour

• 20 degrees per 2 hours

• -1 degree per hour

Tags

CCSS.8.F.B.4

CCSS.HSF.IF.B.6

The graph shows a picture of the temperature changes on the same winter day. The temperature in degrees Fahrenheit is a function of the hours passed since noon.

Find the average rate of change between noon and 10pm.

• 1 degree per hour

• 10 degrees per hour

• 8 degrees per 10 hours

• -1 degree per hour

Tags

CCSS.8.F.B.4

CCSS.HSF.IF.B.6

Jada walks to school.

The function D gives her distance from school, in meters, t minutes since she left home.

Which equation tells us 'Jada is 600 meters from school after 5 minutes'?

• D (600) = 5

• t (5) = 600

• D (5) = 600

• t (600) = 5

Tags

CCSS.HSF.IF.A.2