Answer:
parallel
Step-by-step explanation:
A (3,4), B (4,10)
[tex]Slope of AB = \frac{y_{2}-y_{1}}{x_{2}-x_{1}}\\\\ =\frac{10-4}{4-3}\\\\ =\frac{6}{1}\\\\ = 6[/tex]
C (-9,1), D (-7,13)
[tex]Slope of CD = \frac{y_{2}-y_{1}}{x_{2}-x_{1}}\\\\ =\frac{13-1}{-7-[-9]}\\\\ =\frac{12}{-7+9}\\\\ = \frac{12}{2}\\\\ = 6[/tex]
Slope of AB = Slope CD = 6
If two lines have same slope, they are parallel lines
