Determining the dependent and Independent Variables and Finding

Which of the following ordered pairs shows one-to-one correspondence?

•        {(Christian, Row 1),

  (Johny, Row 2),(Charles, Row 2)}

        

•   {(pencil, paper),(ball pen, paper),(ink, printer),

  (ink, marker pen)}

• {(Ms.Cali, Eng.Teacher),

  ( Ms.Cali, EsP Teacher),

  ( Ms.Cali, Sci. Teacher)}

• (English, red notebook),(Science, blue notebook),

  (Math, yellow notebook)}

Given the function 𝑓(𝑥) = 2𝑥 − 5, find the value of 𝑓(4).

•      -3

• 0

• 3

• 7

Given the variables: the cost to rent an apartment and the length of time it is rented, which is     

      the independent variable?   

    

• the length of time it is rented            

• the cost of rental and length of time    

• the cost of the rental after a month

• the cost to rent an apartment

The amount of money earned by a worker is a function of the number of hours he works. In

       the function, the amount of money earned by a worker is called ____________.

• Domain            

• Inputs

• Elements

• Outputs

What is the domain of the given set of ordered pairs {(3,1), (2,5), (0,5), (−2,6), (−4,7)}?

• . {3, 2, 0, −4}     

• {3, 2, 0, −2, −4}

• {1, 5, 6, 7}

• {1, 5, 5, 6, 7}

The teacher asked Dominique to determine the range of the given set of ordered pairs {(1,1),

      (2,4), (3,4), (−2,1), (−4,5)}. His answer is  {1, 1, 4, 4, 5}. Is he correct?

• Yes, since the numbers are increasing.

• No, because the range is the set of first coordinates.

• Yes, numbers 1, 1, 4, 4, and 5 are the second coordinates of the ordered pairs.

• No, because the elements should be written once and the answer is {1, 4, 5}.

What is the domain of the graph shown in figure 2?

• {-4, -1, 0, 1, 4}

   

   

• {-4, -2, 0, 3, 4}

• {(-4, 1), (6, 0)}

• {6, 0}

Which graph below describes the range R = {𝑦𝜖 ℝ | 𝑦 ≤ 4}?

• 
• 
• 
• 

On a graph, which axis shows the dependent variable?

• x-axis
• y-axis
• neither
• it changes

On a graph, which axis shows the independent variable?

• x-axis
• y-axis
• neither
• it changes