Answer:
Its A and B i beleive.
Step-by-step explanation:

The domain of given function is <u>All real numbers</u>

For each value of x the function is defined.
Example -
The value is 
The value is 4

-7x -7y = 21
Y = 6
Since they are giving you the value of 6 you just plug it in the equation
-7x - 7(6) = 21
-7x - 42 = 21
+ 42. +42
-7x = 63
/-7. /-7
X = -9
Answer: B 1/m
Step-by-step explanation:
Answer:
It will be 57 points.
Step-by-step explanation: