Please help im not good at math

You would make a graph and mark the points on the graph to find the slope

Slope =-2
-2-(-4)/2-3
-2+4/-1
2/-1=-2

You have 2 sides that are 2 cms and you have 6 sides that are 1/2 cm and you have 4 sides that are 1 cm. the smallest sides are 1/2 the medium sized sides are 1 and the smallest are 1/2. so to find the perimeter you have to add them all up together so your answer will be 11 cm's