Which quadratic equation is equivalent to (x – 4)2 – (x – 4) – 6 = 0?
(u - 4)2 – (u – 4) – 6 = 0 where u = (x-4)
o 02-(u - 4) – 6 = 0 where u = (x – 4)
o 02-16 - -6 = 0 where u = (x – 4)
02-4-6 = 0 where u = (x – 4)

Given: lines a and b are parallel and line c is a transversal. prove: 2 is supplementary to 8 what is the missing reason in the proof? statement reason 1. a || b, is a transv 1. given 2. ∠6 ≅ ∠2 2. ? 3. m∠6 = m∠2 3. def. of congruent 4. ∠6 is supp. to ∠8 4. def. of linear pair 5. ∠2 is supp. to ∠8 5. congruent supplements theorem corresponding angles theorem alternate interior angles theorem vertical angles theorem alternate exterior angles theorem