1.   Determine whether the graphs of the pair of equations
3x - 2y = 7 and 3x + 2y = 7
are parallel, coinciding, or neither.
    A. all are correct B. coinciding
    C. neither D. parallel
    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.   How can you tell if two lines are perpendicular?
    A. The slopes are the same. B. The slopes are reciprocals.
    C. The slopes are opposites. D. The slopes are opposite reciprocals.
    Hint

  4.   Write the equation of the line that is parallel to 2x - 3y - 15 = 0 and that passes through the point (3,4).
    A. 2x + 5 - 3 = 0 B. 2x - 3y + 6 = 0
    C. 2x + 3y + 6 = 0 D. 2x - 2y + 6 = 0
    Hint

  5.   Determine the equation of the perpendicular bisector of the line segment with endpoints (1,5) and (-6, 3).
    A. 14x + 4y - 19 = 0 B. 14x + 4y + 19 = 0
    C. 2x + 7y - 23 = 0 D. 2x + 7y + 23 = 0
    Hint