1 
The order (or sense) of an inequality is changed by ________, it each side by a negative constant. 
 A. Adding
 B. Subtracting
 C. Dividing
 D. None of these

2 
A solution of a linear inequality in x and y is an ordered pair of numbers, which _______ the inequality. 
 A. Does not satisfy
 B. May be stisfied
 C. Satisfies
 D. None of these

3 
The operation _______ by a positive constant to each side of inequality will affect the order (or sense) of inequality: 
 A. Adding
 B. Subtracting
 C. Multiplying
 D. None of these

4 
The nonnegative inequalities are called: 
 A. Parameters
 B. Constants
 C. Decision variables
 D. Vertices

5 
For different values of k, the equation 4x + 5y = k represents lines ______ to the line 4x + 5y = 0. 
 A. Perpendicular
 B. Parallel
 C. Equal
 D. None of these

6 
x = c is a vertical line parallel to __________. 
 A. xaxis
 B. yaxis may be
 C. yaxis
 D. None of these

7 
x = 4 is the solution of inequality: 
 A. x + 3 > 0
 B. x  3 < 0
 C. 2x + 3 > 0
 D. x + 3 < 0

8 
ax + b < c is a inequality of: 
 A. One variable
 B. Two variable
 C. Three variable
 D. Four variable

9 
Nonvertical lines divide the plane into___________half plane: 
 A. Upper and lower
 B. Many
 C. Left and Right
 D. None of these

10 

 A. Left or right
 B. Upper or lower
 C. Open
 D. None of these
