Is the graph Proportional or Non proportional? 1.5- Absorbance (450 nm) 0.5- 0.0+ 0 5000 1000 2000 3000 4000 Concentration (pg/mL) O Proportional O Non Proportional

What is the next step in the given proof? choose the most logical approach. a. statement: m 1 + m 2 + 2(m 3) = 180° reason: angle addition b. statement: m 1 + m 3 = m 2 + m 3 reason: transitive property of equality c. statement: m 1 = m 2 reason: subtraction property of equality d. statement: m 1 + m 2 = m 2 + m 3 reason: substitution property of equality e. statement: 2(m 1) = m 2 + m 3 reason: substitution property of equality