Math 9: 3rd 9 Weeks Study Guide
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Solve using Substitution, Elimination, and Graphing. -1 = 2x - y 8x - 4y = -4
Substitution: Elimination: Graphing:
Solve using Substitution, Elimination, and Graphing. 2x + y = 3 4x + 4y = 8
Substitution: Elimination: Graphing:
Solve using Substitution, Elimination, and Graphing. x = y - 1 -x + y = -1
Substitution: Elimination: Graphing:
g(x)= -2x + 6 g(5)
g(x)= -4
Parallel, Perpendicular, or Neither? 4x + 3y = 12 x - y = 6
neither
Parallel, Perpendicular, or Neither? 2x - 3y = 6 4x - 6y = 10
parallel
Parallel, Perpendicular, or Neither? 3x + 6y = -8 y= 2x + 9
perpendicular
Parallel, Perpendicular, or Neither? y= 2/3x + 7 3x + 2y = -8
perpendicular
