Answer:
Yes.
Step-by-step explanation:
y = 4x - 9 is the equation of a line with slope 4and y-intercept -9.
All non-vertical lines are functions.
Since a line with slope 4 is not a vertical line, this relation is a function.
Answer: 2/3
12 lightbulbs and 4 are broken
12-4=8
8/12
/2
4/6
2/3
Positive
If you look at the plot you can see as the population goes up the years go up as well, so you can tell that they are positive since they go from left to right up.
Hope this helps :)
Answer: Sorry if it's wrong I hope I helped you
