Question 1

Solve the system.

Accepted Answer

A)    
B)    
C)    
D)    
E)

Question 2

Determine whether the matrix is in row-echelon form. If it is, determine if it is also in reduced row-echelon form.

Accepted Answer

A)  row-echelon form 
B)  row-echelon form and reduced row-echelon form 
C)  neither

Question 3

Use matrices to solve the system of equations (if possible). Use Gaussian elimination with back-substitution or Gauss-Jordan elimination.

Accepted Answer

A)    
B)    
C)    
D)    
E)  no solution

Question 4

Write the partial fraction decomposition of the rational expression.

Accepted Answer

A)   
B)   
C)   
D)    
E)

Question 5

Find the equation of the circle  that passes through the points  .

Accepted Answer

A)    
B)    
C)    
D)    
E)

Exam 1: Linear Equations

Solve the system.