Algebra 1 Addition Method

7x - 3y = 4 2x - 4y = 1 The solution to the system of equations is _____. (13/34, -15/34) (3/22, -7/22) (13/22, 1/22)

(13/22, 1/22)

7x - 3y = 4 2x - 4y = 1 Which of the following system of equations is not equal to the system of equations shown above? 28x - 12y = 16 and -6x + 12y = -3 -28x + 12y = -16 and 28x - 56y = 14 14x - 6y = 4 and -14x + 28y = 1

(13/22, 1/22)

x + y = k x - y = k The solution to the system shown is _____. (k, 0) (2, 2) (0, k)

(k, 0)

x + 5y = -2 2x + y = 5 The point of intersection of the lines has a y-coordinate of _____. 1 3 -1

-1

5x + y = 6 5x + 3y = -4 The y-coordinate of the solution to the system shown is _____. -5 1 1/2 -1

-5

3x - 4y = 7 3x + 2y = -5 When the second equation is subtracted from the first, the resulting equation is _____. -2y = -12 -6y = -12 2y = 12 -6y = 12

-6y = 12

2x + y = -2 x + y = 5 The x-coordinate of the solution to the system shown is _____. 3 -7 -3 7

-7

2x + 3y = 6 5x + 2y = 4 Which of the following equations could be the result of multiplication and addition to eliminate a variable in the system of equations? 11y = 22 19y = 22 19x = 24

11y = 22

2x + 3y = 9 -2x + 2y = 6 The y-coordinate of the solution to the system shown is _____. 5 15 9 3

3

3x + 5y = 78 2x - y = 0 The point of intersection of the lines has an x-coordinate of _____. 78 6 -6

6

x - y = 4 x + y = 8 The x-coordinate of the solution to the system shown is _____. 12 4 6 2

6

What value of b will give the solution of the system below an x-coordinate of 3? /2x-5y=16 { \bx+5y=11 7 11/3 -1/3 11

7

3x - 4y = 6 6x - 8y = 10 The system shown has _____ solution(s). infinite one no

no