Lesson 17
Graphs
Test Questions

Directions: Complete the exercises below. When you finish, compare your answers with those in the Answer Key. If you get less than 8 items correct, please review the instruction.  Solve the equations below for the numerical value for the unknown.  Check your solutions before you look at the answers.

~The following questions are taken from an actual California Exit Exam~

1. The cost of a long distance call charged by each of two telephone companies is shown on the graph below:

   
    
   Company A is less expensive than Company B for
    

   1. all calls.
       
   2. 3-minute calls only.
       
   3. calls less than 3 minutes.
       
   4. calls longer than 3 minutes.
       
2. Which of the following could be the graph of y = x³ ?
   
   
    
3. What is the slope of the line below?

~The following questions are taken from an actual Texas Exit Exam~

4. The chart below shows the number of orchestra members there are in each section of the Harmony High School orchestra:

   

5. The graph below show two lines:

   

   Which best represents the point of intersection of these two lines?
    

   1. a. (0, 0)
       
   2. b. (4, -5)
       
   3. c. (-4, 6)
       
   4. d. (-6, 8)

   ~The following questions are taken from actual Math A Regents Exams~
    

6. The tables below correspond to two lines in the coordinate plane.
    
   
     
   What is the y-coordinate at the point of intersection of the two lines?
     
   1. a. 0
        
   2. b. -1
        
   3. c. -2
       
   4. d. -3

7. If x and y are defined as indicated by the accompanying table, which equation correctly represents the relationship between x and y?
   
   
    
   1. y = x + 2 
       
   2. y = 2x + 2 
       
   3. y = 2x + 3
       
   4. y = 2x - 3
       
8. Which properties best describe the coordinate graph of two distinct parallel lines?
    
   1. same slopes and same intercepts
       
   2. same slopes and different intercepts
       
   3. different slopes and same intercepts
       
   4. different slopes and different intercepts
       
9. Which equation could represent the relationship between the x and y values shown in the accompanying table?
   
   
    
   1. y = x + 2 
       
   2. y = x2 + 2 
       
   3. y = x2
       
   4. y = 2x
       
10. What is the slope of line in the accompanying diagram?
    
    
     
    1. -
        
    2.  -
        
    3.  
         
    4.