1.   Use Cramer's rule to find the value of x in the system of equations.


    A. B.
    C. D.
    Hint

  2.   Use substitution to solve the system of equations given below.
    A. no solution B. infinitely many solutions
    C. (-10, -12) D. (-12, -10)
    Hint

  3.   Use elimination to solve the system of equations.
-x + 2y = 18
x + 8y = -38
    A. (-5, -1) B. (-22, -2)
    C. D.
    Hint

  4.   Use elimination to solve the system of equations shown below.
2x - 4y = -5
3x + 4y = -15
    A. B.
    C. D.
    Hint

  5.   Which system of inequalities is graphed below?
   
    A. B.
    C. D.
    Hint

  6.   Which system of equations is shown in the graph?
   
    A. x + 2y = 8
2x - 3y = -2
B. 3x - 2y = 8
x - 3y = -2
    C. 2x + y = 8
y - 3x = -2
D. x - y = -2
2x + y = 8
    Hint

  7.   Write the slope-intercept form of an equation for a line perpendicular to the graph of y = -3x + 5 and passes through the x-intercept of that line.
    A. B.
    C. D.
    Hint

  8.   Write the slope-intercept form of an equation for the line that passes through (-4, -26) and is parallel to
    A. B.
    C. D.
    Hint

  9.   Two sides of an angle are contained in lines whose equations are 6x + 4y = 15 and 7x – 9y = 3. Find the coordinates of the vertex of the angle. Round to the nearest hundredth.
    A. (–1.79, 1.06) B. (1.79, 1.06)
    C. (–147, –87) D. (147, 87)
    Hint

  10.   Solve the system of equations given by 5x – 2y = -6 and 15x – 6y = 6.
    A. (-2, -2) B. no solution
    C. infinitely many solutions D. (1, 1)
    Hint

  11.   Use substitution to solve the system of equations given by y = 2x and 5x + y = 7.
    A. (-2, -5) B. (2, 5)
    C. (-1, -2) D. (1, 2)
    Hint

  12.   Which point is not in the solution set of and
    A. (5, 0) B. (-1, -2)
    C. (0, 0) D. (4, 11)
    Hint

  13.   Using the directed graph, how many different routes are there to get from the Boston plant to the Worcester plant in exactly two transfers?
   
    A. 3 B. 2
    C. 4 D. 1
    Hint

  14.   Which city has exactly two ways in which supplies can be transferred from other cities?
   
    A. Lowell B. Boston
    C. Providence D. Worcester
    Hint



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