Practice Algebra

• x = 1

• x = 2

• x = 3

• x = 4

• 3

• 0

• 1

• 2

What is the y-value of the solution to this system of equations? 6x - 5y = -23 y= 3x + 1 Enter your answer in the space provided.

Mathematical Equivalence

ON

Tags

A.5C

What is the value of x in this system of equations:

Mathematical Equivalence

ON

Solve the system of linear equations.

• (3, -1, 1)

• (-3, -1, -1)

• no solution

• infinitely many solutions

Some students want to order shirts with their school logo. One company charges $9.65 per shirt plus a setup fee of $43. Another company charges $8.40 per shirt plus a $58 fee. Which equation represents the number of shirts when both companies charge the same amount?

• y = 9.65 + x
  y = 8.40 + x

• y = 9.65x + 43
  y = 8.40x + 58

• y =9.65x
  y = 8.40x

• y = 9.65x - 43
  y = 8.40x - 58

Sally and John are siblings. John is one less than 3 times Sally's age. The sum of their ages is 23. How old is John, How old is Sally?

• 15,8

• 20,3

• 17,6

• 18,5

Erin is 3 years younger than twice Alex's age. Their ages combined are 33 years. How old are Alex and Erin. If x=Erin's age and y=Alex's age, choose the system that matches the situation.

• x + y = 33
  y = 2x - 3

• x + y = 33
  x = 2y - 3

• x + y = 33
  x = 3 - 2y

• x + y = 3
  x = 33 - 2y

David is running a concession stand at a soccer game. He sells nachos and sodas. Nachos cost $1.50 each and sodas cost $0.50 each. At the end of the game, David made a total of $78.50 and sold a total of 87 nachos and sodas combined. Which system of equations represents this situation?

• 1.5x+0.5y=78.5
  x+y=87

• 1.5x+0.5y=78.5
  1.5x+0.5y=87

• x+y=78.5
  1.5x+0.5y=87

• x+y=78.5
  x+y=87

Mr. Morris gave his algebra class a test, the results of which are listed below. 68, 92, 74, 75, 86, 90, 92, 81, 60, 82, 77, 80 Shania was absent on the day of the test and had to take the test on a date after the scores were first posted. She earned a score of 99. Which measure of the class's test results did Shania's score most change?

• Interquartile Range (IQR)

• Mean

• Median

• Range