Review of Solving Linear Systems

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Review of SolvingLinear Systems
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Directions

• Answer all questions
• Show all work (full credit will be only be given
  to those that show all work)
• Place name on paper (points will be deducted for
  no namers)
• Hand paper into Mrs. Krebsbach by the beginning
  of tomorrows class
• Late papers will be deducted

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What is a linear system?

• Extra What is another name for a linear system?

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2. How many ways did you learn to solve a linear
system?

• List the ways you learned.

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3. Solve the system by graphing.

• y -2x
• y 5x3

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4. Solve the system by using substitution.

• Copy the problem onto your paper and show all
  work
• 4x3y 31
• y 2x7

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5. Solve the system by using substitution.

• Copy the problem onto your paper and show all
  work
• a½b 7
• 3a2b 18

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6. Describe how you would solve a linear system
by using linear combination. (full sentences are
expected)
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7. Solve the system by usinglinear combination
6.Solve this problem by using linear combination.

• Copy the problem and show all work.
• x7y 12
• -5y 3x 10

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8. Solve the system by using the method of your
choice.

• Hint you will get fractions
• 3x-5y -4
• 7y 89x

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9. Compact Disc Sale

• A store is selling cds for 10.50 and 8.50. You
  buy 10 discs and spend a total of 93. How many
  cds at each price did you buy?
• Write a system of linear equations that describes
  the situation.
• Solve the system you wrote in part a.
• Be sure to attach labels.

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The End!

• Be sure your name is on your paper and hand it in
  by the beginning of class time tomorrow!
• Quiz is tomorrow on 7.1-7.3