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A17­2SolvingSystemsSubstitution.notebook November 23, 2015 Using Substitution Algebra 1 Ch.7 Notes Page 41 P41 7­2 Solving Systems Using Substitution Sep 2­8:31 AM Trying to find an x and y that works in both equations Solve for x and y y = ­4x + 8 y = x ­ 7 Jan 23­8:15 AM Substitution and Distribution Solve using Substitution Practice 3y + 2x = 4 ­6x + y = ­7 7x ­ y = 15 y = 2x Feb 5­8:43 AM Practice 7x ­ 8y = 112 y = ­2x + 9 Feb 5­8:43 AM Word Problem .5x + .25y = 36 y + 18 = 16x Your school is planning to bring 193 people to a competition at another school. There are eight drivers available and two types of vehicles, school buses and minivans. The school buses seat 51 people each, and the minivans seat 8 people each. How many buses and minivans will be needed? Let b = buses Let m = minivans Feb 5­8:48 AM Feb 5­8:43 AM 1