Concept of a Function

LT #9: Functions

Study and Review

Open Ended

Function Q gives a puppy's weight in pounds as a function of its age in months.

What does Q(18) represent in this situation?

Open Ended

Function Q gives a puppy's weight in pounds as a function of its age in months.

What does Q(30)=27.5 represent in this situation?

Open Ended

Function Q gives a puppy's weight in pounds as a function of its age in months.

Use function notation to represent this statement:

When the puppy turned 12 months old, it weighed 19.6 pounds.

Open Ended

Function Q gives a puppy's weight in pounds as a function of its age in months.

Use function notation to represent this statement:

When the puppy was m months old, it weighed w pounds.

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Multiple Choice

Select the true inequality.

• $$R\left(2\right)>D\left(2\right)$$

• $$R\left(2\right)<D\left(2\right)$$

• $$R\left(2\right)=D\left(2\right)$$

Multiple Choice

What was the height of the drone when the toy rocket hit the ground?

• 25 feet

• 20 feet

• 0 feet

• 45 feet

Open Ended

For what value of t is R(t)=D(t) true? What does this tell you about the drone and the toy rocket?

Multiple Choice

What is the highest point the squirrel reaches?

• 16 feet

• 10 feet

• 14 feet

• 30 feet

Open Ended

What is the y-intercept of the graph? What does it tell you about the squirrel?

Open Ended

What is the x-intercept of the graph? What does it tell you about the squirrel?

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Open Ended

What is the average rate of change of the population between 1930 and 1950?

Open Ended

What is the average rate of change of the population between 1950 and 1980?

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Open Ended

Describe the domain of the function.

Open Ended

Describe the range of the function.

Open Ended

Does W(t)=0 have a solution? Explain how you know.

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Multiple Choice

Here is a graph that represents a function. Which equation represents the function?

• $$f\left(x\right)=\left|x+9\right|-3$$

• $$f\left(x\right)=\left|x+9\right|+3$$

• $$f\left(x\right)=\left|x-9\right|+3$$

• $$f\left(x\right)=\left|x-9\right|-3$$

Multiple Choice

f(x)= |x−3|−1

• A

• B

• C

• D

Multiple Choice

What is the equation of the graph below?

• f(x) = I x + 2 I 

• f(x) = I x  I + 2

• f(x) = I x  I - 2

• f(x) = I x - 2 I