Answers: - vector equation: r(t) = <1 + 6t, -1 + 7t, 7 - 6t>
- parametric equations:
x = 1 + 6t
y = -1 + 7t
z = 7 - 6t
Explanation: To obtain the vector equation, we first get a vector v that is parallel to the line. To get the vector v, we subtract p from q. So,
v = q - p
= (7,6,1) - (1,-1,7)
v = (6, 7, -6)The vector equation of the line is given by

Where

= a point in the line (we choose point p(1,-1,7))
So, the equation of the line joining p and q is given by

In the parametric equation of the line, we just need to get the x, y and z coordinates in the vector equation.
Since the vector equation is given by

The parametric equations of the line are given by:
Answer:
(An ellipse)
Step-by-step explanation:
Let consider the following trigonometric identity:

Each trigonometric function is cleared respectively in given parametric equations:
and 
The equivalent expression in rectangular form is:

Which represents an ellipse.
Answer:
42
Step-by-step explanation:
Write 2% as
2
100
Since, finding the fraction of a number is same as multiplying the fraction with the number, we have
2
100
of 2100 =
2
100
× 2100
Therefore, the answer is 42
If you are using a calculator, simply enter 2÷100×2100 which will give you 42 as the answer.