If two lines have slopes of -2/9 and 9/2 are they perpendicular?

Step-by-step explanation:

If the two lines are perpendicular, Multiplying their slopes must give the result of -1.

So, Let's Multiply these slopes.

=>

=> -1

Since, the result of multiplying these slopes give -1, So, the two lines are perpendicular.

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.