1.How can a solution to a system of linear equations be identified from a graph? 2.How can a solution to a system of linear equations be determined exactly by graphing?
3.How can a system of linear equations in a real-world context be created and solved graphically?
4.How can the number of solutions for a system of two linear equations be determined?

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