For the first equation go down 2 on the y- axis. Then, go up 5 and over to the right 1. Then shade above the line.
For the 2nd equation get y by itself and you the steps I just gave you, but using the numbers in this equation.
1. Take a look at the pictures attached.
2.
i) the first line divides the plane into 2 regions
ii) the second line adds 2 more regions so we have 4 in total.
iii) the third line adds 3 more regions, so 4+3=7 regions
iv) the fourth line adds 4 more regions.
so the

line adds n more regions to the ones created by the previous n-1 lines.
3.





So the recurrence relation is

Answer:
see below
Step-by-step explanation:
We could get another dog and have 22 dogs
We could sell a dog and have 20 dogs.
The dog who is 14lbs could have a massive weight gain or loss. that would be the 11th dog when lined up by weight.