Answer:
The answer is <u>80</u>
Step-by-step explanation:
78.74 is closer to 80 than it is to 70.
Rate of change or slope. Hope it helps.
Answer:
They are all positive because you must go right.
They are all negative because you must go down.
Step-by-step explanation:
Example. (1,-4)
You go over one.
Down 4
Answer:
rise
Step-by-step explanation:
Answer
Subtract
from 
then;

Remove the bracket we have;

Like terms are those terms which have same variable to the same power.
Combine like terms;

Therefore, Subtracting
from
we get 