Algebra 2: Quiz #5 PRACTICE!
Name:____________________________Period:_______ Score:________/30
Directions: For the given system, indicate the number of solutions. Also, indicate whether
the given lines are independent, dependent, or inconsistent. Circle your final answer.
(2 points each)
1)
y = 4x - 1
8x - 2y = 6
2)
3x - 3y = 24
y=x-8
3)
y = 2x - 1
6x + 3y = 1
Directions: Solve each system by using substitution or elimination. Write the solution as an
ordered pair. Circle your final answer. (2 points each)
4)
y = 2x - 49
x - y = 30
5)
15x + 2y = 25
3x + 3y = 44
Directions: Solve each system by using substitution or elimination. Write the solution as an
ordered pair. Circle your final answer. (4 points each)
6)
x + 2y - z = 1
3x - y - 2z = 19
5x + 3y - 3z = 16
7)
2x - y + z = - 4
3x + y - 2z = 0
3x - y
=-4
8)
x+y+z=3
2x + y + z = 5
x + 2y – z = 4
9)
4x – y + 2z = -6
-2x + 3y – z = 8
2y + 3z = -5
Directions: Solve the following system by using substitution or elimination. Write the solution
as an ordered pair. Answer question in a complete sentence. (4 points)
10) A dietitian prepares a meal with three foods.
Food
A
B
C
Protein (g/oz) Fat (g/oz)
2
3
3
3
3
3
Carbohydrates
(g/oz)
4
1
2
The meal should have 24 grams of protein, 27 grams of fat and 20 grams of carbohydrates.
How many ounces of each food should be used?