Systems of Equations - Unit test review

Julie is asked to solve the system below by elimination. Which of the following steps would be the BEST way to begin?

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Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Which graph represents the solution to the given two-variable system of linear equations.

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CCSS.8.EE.C.8B

Sam scored 80% on Part A of a math test and 92% on part B of the math test. His total points on the test was 63. The total possible points for the test was 75. Find the number of points of each part of the test.

Which of the following BEST describes the unknown values you should be solving for in this problem?

• x: Sam's percent of points in test part A.

  y: Sam's percent of points in test part B.

• x: The number of points of test part A.

  y: The number of points of test part B.

• x: Sam's total points in test part A

  y: Sam's total points in test part B.

• x: The percent of point of test part A.

  y: The percent of point of test part B

Tags

CCSS.8.EE.C.8C

Sam scored 80% on Part A of a math test and 92% on part B of the math test. His total points on the test was 63. The total possible points for the test was 75. Find the number points of each part of the test.

Which system of equations represents this situation?

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Tags

CCSS.HSA.CED.A.3

Roger is being asked to solve the given two-variable system of linear equations by elimination and is being forced to first eliminate the variable x. Which of the following is his correct first move?

• He should multiply the first equation by -3 and the second equation by 7.

• He should multiply the first equation by 2 and the second equation by -3.

• He should multiply the first equation by 10 and the second equation by 15.

• He should multiply the first equation by 15 and the second equation by 10.

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Holy Spirit High School is selling tickets to its Spring Concert. Adult tickets cost $4 and student tickets cost $2.50. 900 tickets are sold and the school makes $2820.

How many of each type of tickets were sold?

Which system BEST describes the situation?

x: being the number of adult tickets sold.

y: being the number of student tickets sold.

Tags

CCSS.8.EE.C.8C

Which two equations are represented in the following graph?

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Tags

CCSS.8.EE.C.8B

When solving a system of linear equations algebraically, Chrissy obtained 0=4. How can Chrissy interpret that result?

• No solution

• The result is impossible, so she made a mistake

• Infinitely many solutions

• Solution of (0,4)

Tags

CCSS.8.EE.C.8B

Sidney has a total of 10 coins, some are nickels and some are quarters. The value of the coins is $1.70. How many nickels does Sidney have?

• 3 nickels

• 4 nickels

• 5 nickels

• 6 nickels

Tags

CCSS.8.EE.C.8C

Which choice represents the correct inequality for this graph?

Tags

CCSS.HSA.REI.D.12