Find the coordinates of the point of intersection for this system. 2m + 5n = -18
m + 2n = -6

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

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

What is the missing reason in the proof? segment addition congruent segments theorem transitive property of equality subtraction property of equality?