1.   A system of linear equations will have exactly one solution if the graphs of the equations have __________.
    A. different slopes
    B. the same slopes and the same y–intercepts
    C. the same slopes and different y–intercepts
    D. The number of solutions cannot be determined by examining the slopes and y–intercepts.
    Hint

  2.   Refer to the graph below. Which statement is not true for the system of equations?
   
    A. There is no solution to this system of equations.
    B. The graphs appear to be parallel lines.
    C. This system is inconsistent.
    D. This system is consistent.
    Hint

  3.   Which is the correct graph for the system of equations x + y = 4 and
y = x – 2?
    A. B.
    C. D.
    Hint

  4.   Solve the system of equations and 2y – 4x = 12.
    A. Each equation has the same graph, so there are infinitely many solutions.
    B. The graphs appear to be parallel lines, so there is no solution to the system.
    C. (-4, -2)
    D. (-4, -8)
    Hint

  5.   Katrina has $50 and makes $6 per hour. Kevin has $30 and makes $1 every ten minutes. If neither of them spends any money and they work the same hours, will Katrina and Kevin ever have the same amount of money?
    A. Katrina will always have more money.
    B. Kevin will always have more money
    C. Eventually they will have the same amount of money.
    D. They will always have the same amount of money.
    Hint