1.   Which equation has a graph perpendicular to the graph 3y = 2x - 9?
    A. B. y = 2x + 5
    C. 2x + 3y = 4 D. 3x + 2y = 7
    Hint

  2.   Three out of the four equations listed below are equations of lines that are parallel to each other. Which equation does not have a graph that is a line parallel to the other three?
    A.
    B. 3x + 4y = -16
    C. 8y = - 6x
    D.
    Hint

  3.   Write the slope-intercept form of an equation for the line that passes through (-8, -1) and is parallel to the graph of
    A. B.
    C. D.
    Hint

  4.   Line segment has endpoints A(-6, -3) and B(2, 1). Line segment has endpoints C(-4, 8) and D(3, -6). Is perpendicular to ? Why?
    A. Yes, the slopes are negative reciprocals.
    B. No, the lines intersect but not at right angles.
    C. No, the lines are parallel.
    D. Yes, the slopes are opposites.
    Hint

  5.   Write the slope-intercept form of an equation for a line that passes through (-1, 0) and is perpendicular to the graph of 3x – 5y = 20.
    A. B.
    C. D.
    Hint



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