PLEASE HELP QUICKK Which slopes could be the slopes of perpendicular lines?

Question 1 options:

1/2 and 2

8 and -1/8

2 and 2

1 and -1

0 and undefined

The answer would be:

8 and -1/8

1 and -1

And could be 0 and undefined, but I'm not 100% sure

the answer is d

the answer is in the first quadrant, which make the y-int positive.

since the dots are going down, therefore the correlation is negative

i hope it is right.