Answer:
,
and 
Step-by-step explanation:
The vector equation of the line is:


The parametric equations of the line are:
and 
Answer:
20
Step-by-step explanation:
10- 10, <u>20</u>, 30, 40 ,50
4- 4, 8, 12, 16, <u>20</u>
48 units! This may be wrong but hoped it helped!
The answer is four
See my handwritten problem worked out in attached pic