Match the reasons with the statements in the proof. given: j | | k m 1 = m 3 prove: l | | m 1. j||k, m? 3 = m? 1 given 2. m? 1 = m? 2 if alternate interior angles are =, then lines are ||. 3. m? 2 = m? 3 if lines are ||, then corresponding angles are =. 4. l||m substitution

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14