D.........................................
Answer:
12
Step-by-step explanation:
Lines b and c
they both go up 2 and over 1 (rise over run is slope)
Answer:
Option b is correct
.
Step-by-step explanation:
Domain is the set of all possible values of x where function is defined.
Given the function:

To find the domain of the given function:
Exclude the values of x, for which function is not defined
Set denominator = 0

By zero product property;
and 
⇒x = 0 and 
⇒x = 0 and 
Therefore, the domain of the given function is:

Answer:
x=3 and y=-7.
Step-by-step explanation:
according to the given coordinates the required lines are:
horizontal: y=-7;
vertical: x=3.