There are two ways to approach this.
Option #1:
Use the slope formula
.

That value is undefined, so the slope is undefined.
Option #2:
Because the two points have the same x-value, they will be vertically above/below one another. This means your line is a vertical line and the slope of a vertical line is undefined.
Either way, your slope is undefined.
Answer:
Radius is half the diamiter of a circle, basically the whole length from one point of the circle to the middle.
could you further explain?
The 5 th term of the given expression is 330
.
Step-by-step explanation:
Given,

To find the 5th term of the given expression.
Formula
In a binomial series
, the r th term is = nC(r-1)
, where,
nC(r-1) = 
Now,
Putting, n=11, r = r, a=6x and b=6y we get,
5 th term = 11C4
= 

= 

= 330
Here is the answer.