Answer:
swing state
noun
a US state where the two major political parties have similar levels of support among voters, viewed as important in determining the overall result of a presidential election.
Step-by-step explanation:
One decade is 10 years+ 8 years is 18 total years
18 minus 9 is 9 years
Hope this helps
The answer is 3. If the lines are parallel then they would have the same slope. :)