9.7a_practice

# 9.7a_practice - method 3 5x 3y = 80 2x y = 30 3 Solve the...

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Mat120 - Homework Practice - Section 9.7 Name___________________________________ Class Hour:______________________________ Determine whether the given ordered pair is a solution to the system. 1) ( - 3, 4) x + y = 7 x - y = - 1 1) Solve the system by graphing. 2) y - 4x = 6 3y = 12x + 18 x -4 -2 2 4 6 y 4 2 -2 -4 2) Solve the system by the substitution

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Unformatted text preview: method. 3) 5x + 3y = 80 2x + y = 30 3) Solve the system by the addition method. 4) 5x + 27y = 27 7x-9y = -9 4) 1 Answer Key Testname: 9.7A_PRACTICE 1) no 2) {(x,y) y- 4x = 6} 3) {(10, 10)} 4) {(0, 1)} 2...
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9.7a_practice - method 3 5x 3y = 80 2x y = 30 3 Solve the...

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