Answer:
Step-by-step explanation:
mean for 5 square miles is 2.6 storms
mean for 9 square miles is 
Answer:
line plots do you mean number line, cos no pic is attached
y - y1 = m(x + x1)
m = (y2 - y1)/(x2 - x1) = (-6 - 2)/(-1 - 5) = -8/(-6) = 4/3
y - 2 = 4/3(x - 5) is a possible answer
y + 6 = 4/3(x + 1) is also a possible answer
The point estimate is the mid-point of the interval:

The margin of error is the difference between the endpoints of the interval and the mid-point.