University:
High School
Course:
High School Algebra
Academic year:

2020
Views:

248

Pages:

3
Author:

beldebatexd

ALGEBRA: STANDARD 9 REVIEW A Solve the following system of equations using any method you choose. All work must be shown. 1. 1 x + 2y = 4 -x + y = 2 (0, 2) 6x - 2y = 8 2(2x + y = 1) 6x - 2y = 8 4x + 2y = 2 10x = 10 x = 1 2(1) + y = 1 2 + y = 1 y = -1 (1, -1) 4x = 3 - 6y 2x - 2y = 9 4x + 6y = 3 6x - 6y = 27 10x = 30 x = 3 4(3) = 3 - 6y 12 = 3 - 6y -9 = -6y y = 3/2 (3, 3/2) y = x 2x + 4y = 6 2x + 4(x) = 6 6x = 6 x = 1 y = 1 (1, 1) 7x + y = 12 x - y = 4 8x = 16 x = 2 2 - y = 4 -y = 2 y = -2 (2, -2) 5x - 2y = 5 -2x + y = -3 5x - 2y = 5 -4x + 2y = 6 x = 11 -2(11) + y = -3 -22 + y = -3 y = 19 (11, 19) Solve the following system of equations and inequalities by graphing. y = 3x - 6 x + y = 6 (3, 3) 3x - 2y = 6 y = -4x - 2 (0, -2) 2x + 3y ≥ -12 y < -4x + 4 y ≤ ¼x + 4 8x - 2y ≥ 4 ALGEBRA: STANDARD 9 REVIEW B Solve the following system of equations using any method you choose. All work must be shown. 1. 1 x - y = 13 -x + 5y = 9 4y = 22 y = 5.5 x - 5.5 = 13 x = 18.5 (18.5, 5.5) 1. ca01001129.schoolwires.net ca01001129.schoolwires.net 5x - 2y = 9 4(x + y = 2) 5x - 2y = 9 4x + 4y = 8 9x = 17 x = 17/9 17/9 + y = 2 y = 1/9 (17/9, 1/9) 3x = 6 - 3y 2x + 3y = 9 x = 2 - y 2(2 - y) + 3y = 9 4 - 2y + 3y = 9 y = 5 x = 2 - 5 x = -3 (-3, 5) y = 6x 2x - (6x) = -8 -4x = -8 x = 2 y = 6(2) y = 12 (2, 12) 7x + y = 12 x - y = 4 8x = 16 x = 2 2 - y = 4 -y = 2 y = -2 (2, -2) 5x - 2y = 5 -2x + y = -3 5x - 2y = 5 -4x + 2y = -6 x = -1 -2(-1) + y = -3 2 + y = -3 y = -5 (-1, -5) Solve the following system of equations and inequalities by graphing. y = 5x - 2 x + y = 2 (0, -2) 2x + 4y = 8 3y = 6x + 15 (2, 1) 4x + 2y ≥ -4 y < -x - 6 y ≤ ¼x + 4 8x - 2y ≥ 4