Answer:
y = 1
Step-by-step explanation:
The slope of a horizontal line is 0 which leaves you with only the y-intercept
A square is made up of 4 equal sides all you would have to do to find the perimeter is divided 86 by 4 and that equals 21.5
21.5 should be your answer
Answer:

Step-by-step explanation:
It's 31 degrees, I hope it is the right answer