I hope this helps you
3y-2=y+4
2y=6
y=3
Perimeter=4+6+7
Perimeter=17
B = 4
A line with a slope of zero is a perfectly horizontal line, which means the y value (the second value) stays the same for every single point on the line.
So, if y equals 4 in the first point, then y still equals 4 in the second point, which means b is equal to 4.
The answer is 5. The only factors are 1 and 5, and 5 is the highest.