Question 1
A system of equations that has at least one solution is called inconsistent.
2 points

Question 2
Does the following system of equations have a solution?
2 points

Question 3
What is the approximate solution of the following system of equations?
2 points

Question 4
Solve the following system of equations by using the substitution method. x – y = 3 2x + 2y = 2
2 points

Question 5
Solve the following system of equations by using the substitution method. y = 6x – 11 -2x – 3y = -7
2 points

Question 6
Solve the following system of equations by using the elimination method. x + y = 4 2x + 3y = 9
2 points

Question 7
Solve the following system of equations by using the elimination method. -4x – 2y = -12 4x + 8y = -24
2 points

Question 8
Solve the following system of equations using matrices. 3x – 2y = 31 3x + 2y = -1
2 points

Question 9
Solve the following system of equations using matrices. y = 2x – 1 6x – y = 13
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

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