Answer: (-3,9)
When we rotate 180 degrees about the origin, the rule is (x,y) --> (-x,-y). The coordinate signs have swapped. If x is negative, then x turns positive, or vice versa. The same applies for y as well.
x = 3 becomes -x = -3
y = -9 becomes -y = -(-9) = 9
The rate of change is the slope. You're finding the average between two points, so find the slope between them using the slope formula. It's 20.
Step-by-step explanation:

m is the slope.
plug in the numbers, and you get

Step-by-step explanation:
5 more than a number, the sum of a number and 5, the total of a number and 5,
Answer:
Its 6
Step-by-step explanation:
I know this because two of the y's is 6 which equals 12