

1. 
Determine whether the graphs of the pair of equations 3x  2y = 7 and 3x + 2y = 7 are parallel, coinciding, or neither. 


A. 
coinciding 
B. 
parallel 


C. 
neither 
D. 
all are correct 


Hint 


2. 
Write the standard form of the equation of the line that passes through the point (1, 3) and is parallel to the graph of 2x  7y + 1 = 0. 


A. 
2x + 7y + 23 = 0 
B. 
2x + 7y  23 = 0 


C. 
2x  7y  23 = 0 
D. 
2x  7y + 23 = 0 


Hint 


3. 
Write the standard form of the equation of the line that passes through the point (4, 2) and is perpendicular to the graph of 3x  2y + 9 = 0. 


A. 
2x> + 3y  14 = 0 
B. 
2x + 3y + 14 = 0 


C. 
3x  2y + 14 = 0 
D. 
3x  2y  14 = 0 


Hint 


4. 
Determine the equation of the perpendicular bisector of the line segment with endpoints S(2, 6) and T(10, 4). 


A. 
5x + 4y + 19 = 0 
B. 
4x  5y + 19 = 0 


C. 
4x  5y  19 = 0 
D. 
5x  4y  19 = 0 


Hint 


5. 
How can you tell if two lines are perpendicular? 


A. 
The slopes are opposite reciprocals. 
B. 
The slopes are reciprocals. 


C. 
The slopes are opposites. 
D. 
The slopes are the same. 


Hint 

