For this case we have that by definition, having two points through which a line passes
, we can find its slope of the following form:

If we have:

We know that equal signs are added and the same sign is placed

So, the slope of that line is 
Answer:

Hello,
Let's assume a the hypotenuse
b/a=sin 30°==>b=a/2
c/a=cos 30°==>c=√3 / 2 *a
(√3/2 a, a/2,a) are the sides of the triangle.
The answer would be -9.72
Given:
The length of field is n yards.
The length of a field in feet is a function f(n).
To find:
The function rule for this situation.
Solution:
We know that,
1 yard = 3 feet
Using this conversion, we get
n yard = 3n feet
The length of field is n yards. So, the length of the field is 3n feets.
The length of a field in feet is a function f(n). So,

Therefore, the required function rule for this situation is
.