I really need help with this, so please help.

1. The line which is parallel to the line l as represented in the task content is; line k. This follows from the fact that the two lines have the same slope and are bound to never meet each other.
2. The transformation which results in line k from line l is; the translation of line l by a given number of units upwards (vertical direction).
3. The transformation which results in line l from line p is; the rotation of line l in the anticlockwise direction by an angle of about; 90°.
Parallel lines as defined geometrically are lines which are bound to never meet and hence, such lines would definitely have equal slopes.
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