The gradient for a parallel line is the same.
perpendicular lines are negative reciprocals.
so all you have to do is re arrange it so y=Mx+b so the check out the gradients to what I listed above... remember y shouldn't have any number on it.
Since VX is the bisector of angle V and < VXU is a right angle then UX is congruent to XW and triangle VUW is isosceles with VU = VW.
3z - 4 = x + 6
2z = 10
z = 5
so UW = 3(5) - 4 + 5 + 6 = 22
and VW = 5(5) - 1 = 24
VU = VW = 24
perimeter = 2(24) + 22 = 70
