Which equation is an identity?

–3y + 3 = –3y – 6

3w + 8 – w = 4w – 2(w – 4)

9 – (2v + 3) = –2v – 6

7m – 5 = 8m + 7 – m

Find the zero function by factoring (try to show work) h(x)=-x^2-6x-9

If i have one apple and give you the apple, how many apples do i have?

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