Answer: The correct options are 1 and 2.
Step-by-step explanation:
It is given that the slope of line MN is -6.
The slope of parallel lines are always equal. Therefore the line which have slope -6 is parallel to MN.
The formula to find the slope is,

Slope of PQ,

Slope of TU,

Slope of RS,

Slope of WX,

Therefore, the correct options are 1 and 2.