Name________________________

                     ANALYZING EQUATIONS  #2--RUBRIC

PART A:  For each function below, fill in the missing inputs and outputs.   (8 points)  

1.		             2.     	              3.     	       4.  
Input (x)	Output (y)	
    4	10	
 14	20	
Input (x)	Output (y)	
10	4	
4	2	
Input (x)	Output (y)	
-2	-8	
0	2	
Input (x)	Output (y)	
7	4	
17	2	

PART B:  Analyze the functions listed in each box.  The variable x represents the input and y is the output.  Circle all of the statements that apply to the function listed in the box. (12  points)  
       								
a.  When the input is 2 the output is 14
                                                      
								b.  When the input is 3 the output is 20

y = 4x + 8

	5.  							c.  It’s graph is a straight line

								d.  The y-intercept is (0,8)

								e.  y is a function of x

a.  The y-intercept is (-4,8)
                                                      
								b.  The y-intercept is (0,-8)

y = -8x - 4

	6.  							c.  y is a non-linear function

								d.  When the input is -1 the output is 4

								e.  It’s graph crosses the y-axis is -4

a.  y is a function of x
                                                      
								b.  When the input is 10 the output is -8

	7.  							c.  When the input is 5 the output is -8

								d.  It’s graph passes through the point (8,-13)

								e.  The y-intercept is (0,-1)

www.imathworksheets.com