Answer:
or 
Step-by-step explanation:
The formulat for finding the slop is
m = (y2 - y1)/(x2 -x1)
so if we put the values of our two given points
m = (-13 -12) / (5 - 5) = -25/0 = undefined
so our slop is undefined which means it is a vertical line
Answer:
1 option is correct
Step-by-step explanation:
Angle AOB and DOC is vertically opposite angle
you can use calculator because it shows the graph and table.
