Answer:
A variable is a letter used in a mathematical equations , formula or expression
To find the slope,we can use the slope formula:

Where x and y are y coordinates and x coordinates respectively.
To find the answer, put any two points into the formula.
In this case, (1,5) and (0,-1) will be used:
x1 and y1 would be the x and y coordinate in the first point(1,5), while x2 and y2 would be the x and y coordinate in the first point (0,-1)

Therefore the answer is 6.
Hope it helps!
Answer:
see explanation
Step-by-step explanation:
Using the trigonometric identities
• tan x = 
• sec x =
, csc x = 
Consider the left side with x = Θ

=
=
× 
= 
=
× 
= secxcscx = right side ⇒ verified
I believe it is 20 and 15