Given the table, write an expression for the function, and describe what it does. a) y=2x. y is double x. b) y=3x. y is triple x. c) y=4x. y is 4 times x. d) y=2x+1. y is twice x plus 1.

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