What is the last step to solving a system of equations by substitution? a. simplify if needed c. solve for second variable b. check the proposed ordered pair solution in both original equations d. solve one equation for either variable

Which of the following transformations will make coincide with ? a. counter-clockwise rotation 90º about a, followed by a translation 5 units to the right b. translation 5 units to the right, followed by a reflection across the y-axis c. translation 5 units to the right, followed by a reflection across the x-axis d. translation 1 unit up and 5 units to the right, followed by a reflection across the x-axis