TRUE
FALSE
2 points
Question 2
Does the following system of equations have a solution? yes no
2 points
Question 3
What is the approximate solution of the following system of equations? (2, -7) (-7, 2) (7, 2) (-7, -2)
2 points
Question 4
Solve the following system of equations by using the substitution method.x – y = 32x 2y = 2 (3, 4) (-4, 5) (2, -1) Inconsistent
2 points
Question 5
Solve the following system of equations by using the substitution method.y = 6x – 11-2x – 3y = -7 (1, 2) (2, 1) (-3, 1) (2, 4)
2 points
Question 6
Solve the following system of equations by using the elimination method.x y = 42x 3y = 9 (3, 1) (-2, 1) (3, -1) Inconsistent
2 points
Question 7
Solve the following system of equations by using the elimination method. -4x – 2y = -124x 8y = -24 (5, 3) (-6, -6) (3, 1) (6, -6)
2 points
Question 8
Solve the following system of equations using matrices.3x – 2y = 313x 2y = -1 (5, -8) (3, 5) (-3, 9) (2, 8)
2 points
Question 9
Solve the following system of equations using matrices.y = 2x – 1 6x – y = 13 (3, 5) (-3, 5) (5, 0) Inconsistent
2 points
Question 10
A
laboratory employee is mixing a 10% saline solution with 4% saline
solution. How much of each solution is needed to make 500 milliliters of
a 6% solution. 170 milliliters of the 10% solution and 340 milliliters of 4% solution 167 milliliters of the 10% solution and 333 milliliters of 4% solution 110 milliliters of the 10% solution and 210 milliliters of 4% solution 155 milliliters of the 10% solution and 300 milliliters of 4% solution
