jayanti wrote:Lines k and m are parallel to each other. Is the slope of line k positive?
(1) Line k passes through the point (3, 2).
(2) Line m passes through the point (-3, 2).
Given: Line K and Line M are parallel to each other =
Slopes of line K and line M are equal
Required:
Is slope of line K positive?
Though this question can be solved algebraically, I suggest solving it through rough sketching of an X-Y plane and placing the coordinates.
Statement 1: It only gives one point on line K; Hence, insufficient.
Statement 2: Not different from the above; Hence, insufficient.
Both: Once again insufficient, as the lines can have both positive, both negative, or both 0 slopes.
Hence, the answer is
E.
Solving it algebraically tells you that the sum of the y-intercepts is 4.[You can determine the value even by the graphic approach suggested above].
