It would be an over-estimate if u rounded ur numbers up and an under-estimate if u rounded ur numbers down
P=2L+2W
P=(2*4)+(2*8)
P=8+16
P=24
Slope is change in y over change in c.
Using the two dots shown:
(5,8) (3,2)
Slope = (2-8)/(3-5) = -6/-2 = 3
The slope is 3
Grouping 1 10 as 10 1's is the same because you have just rearranged the numbers but they equal the same