Find the perimeter of the polygon with the given vertices x (-1,3) y (3,0) z (-1,-2)

x (-1,3) y (3,0) z (-1,-2)

xy

m = (3 + 1) / (0 - 3) = 4/-3 = - 4/3

y - 3 = - 4/3 (x + 1)

y - 3 = - 4/3x - 4/3

xy: y = - 4/3x + 5/3

yz

m = (0 + 2) / (3 + 1) = 2/4 = 1/2

y = 1/2 (x - 3)

yz: y = 1/2x - 3/2

xz

m = (3 + 2) / (-1 + 1) = 5/0 = undefined

y - 3 = undefined (x + 1)

xz: x = - 1

xy: y = - 4x/3 + 5/3

yz: y = x/2 - 3/2

xz: x = - 1