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Warm-Up Use SUBSTITUTION to solve the linear system 1) -2x + y = -3 2) -3x + 6y = 24 y = -2x + 1 -2x – y = 1 Sec.7.1-7.3 Review There are ten problems on the quiz. Find the solution to the system by GRAPHING. Find the slope and y-intercept for each linear equation. 1.) y = x + 3 y = -x + 7 2.) x + 9y = 9 3x + 6y = 6 Use LINEAR COMBINATIONS to solve the linear system. 4.) 5x – 3y = 7 3.) x + y = 6 x + 3y = 5 x – y = 12 Use Linear Combinations to solve the linear system. 5.) 2x + 3y = 36 6.) 2x + y = 0 2x – y = 4 5x – 4y = 26 7.) -4x + 7y = -2 x = -y – 5 Use SUBSTITUTION to solve the linear system. 8.) 4x – y = 8 9.) x + 3y = 9 10.) 5x – y = -5 y = 2x 4x – 2y = -6 3x + 6y = -3 Prepare for the Test Please take out two sheets of paper. Label them as below. Answers Only Sec.7.1-7.3 Quiz Show your work Name Name Period Period Date Date Sec.7.1-7.3 Quiz