Answer:
y=7x
Step-by-step explanation:
x=time
Answer:
A: 12/7
Step-by-step explanation:
So you multiply 2 1/3times 1 1/2 and you get 3 and 1/6
Answer:
r= 10
Step-by-step explanation:
30 - 20 = 10
For this case we have to by definition, if two lines are perpendicular then the product of its slopes is -1.
That is to say:

We have the following equation:

So:

Thus:

Thus, a line perpendicular to the given line must have slope 
Option A:

It is not perpendicular!
Option B:

If it is perpendicular!
Option C:

It is not perpendicular!
Option D:

It is not perpendicular!
The correct option is option B
ANswer:
Option B