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Solved Examples
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ff  What is the slope of a line parallel to 5x + 4y + 9 = 0?   ff View Solution
ff  The lines 30x - 5y + 11 = 0 and y = 6x + 14 are  ff View Solution
ff  Find the value of k if the line ky = (k - 1)x + 3k is parallel to y = 2x + 5.
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ff  What is the slope of a line parallel to 6x + 5y + 11 = 0?   ff View Solution
ff  The lines 20x - 4y + 9 = 0 and y = 5x + 12 are  ff View Solution
ff  In a plane, two lines parallel to a third line are  ff View Solution
ff  In a plane, two lines perpendicular to a third line are  ff View Solution
ff  The slopes of non-vertical parallel lines are
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ff  Identify the correct statement.
I. Vertical lines are perpendicular to each other.
II. Vertical lines are parallel to each other.
III. Vertical lines are not parallel to each other.
IV. Vertical lines are intersecting.  ff
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ff  What is the slope of a line parallel to x-axis?
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ff  Number of lines parallel to a line and passing through a given point is/are
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ff  Find the product of the slopes of x-axis and y-axis.
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ff  A(1, - 3), B(5, 4), C(3, 2), D(2, 0) are the coordinates of 4 points in the x - y plane. Is AC || BD?
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ff  Which of the following lines is parallel to x = 3?
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ff  Slope of a line parallel to 2x + 3y + 6 = 0 is
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ff  A(4.5, 5), B(2, 5), C(1.5, - 2), D(3, - 2) are the coordinates of 4 points in the x-y plane. What can you say about the lines AB and CD?  ff View Solution
ff  What is the slope of a line parallel to y = 3?
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ff  The lines x = 3 and x = 7 are
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ff  Which of the following is not parallel to y = (35)x + 6?  ff View Solution
ff  Find the equation of a line parallel to x = 3 and passing through (4, 5).
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ff  Find the equation of the line parallel to y = 4 and passing through (6, 5).
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ff  Find the equation of the line parallel to y = 2x + 3 and passing through (1, 2).
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ff  What is the inclination of a line parallel to y = x - 3 ?  ff View Solution
ff  What is the slope of a line parallel to y-axis?  ff View Solution
ff  A line AB makes an angle of 60o with the positive x-axis. What is the slope of any line parallel to AB?
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ff  If the line through (3, y) and (2, 7) is parallel to the line through (- 1, 4) and (0, 6), then what is the value of y?  ff View Solution
ff  Choose the equation of the line passing through the point (- 5, 1) and parallel to the line joining the points A(7, - 1) and B(0, 3).
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ff  What is the value of p if the lines y = 3x + 7 and 2y + px = 3 are parallel to each other?  ff View Solution