Line d and c are bother parallel but the three options would be them
Answer:

Step-by-step explanation:
The equation for a line is y=mx + b where m represents the slope
If a line is perpendicular to another line, it's slope is the negative reciprocal of the other line's slope.
The reciprocal of -4 is 
And the negative of that would be 
Answer:
C
Step-by-step explanation:
All sides of a square are equal.
Answer:
12 ÷ 5
Step-by-step explanation: