Which of the following statements must be true about the polynomial function f(x)? if 1+ 13 is a root of f(x), then -1- 19 is also a root of f(x).
if 1 + 131 is a root of f(x), then 1-131 is also a root of f(x).
of 13 is a root of f(x), then -13 is also a root of f(x).
11-13 +i is a root of f(x), then 13 + 1 is also a root of f(x).

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