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2.3 Solving Systems of Equations Using Substitution

Solve each system of equations using the substitution method. All answers will be whole numbers. Write your final answer as an ordered pair (x, y). Show your work for full credit.

Question 1

Short answer

Solve the system: y = 2x + 1 x + y = 10 Write your answer as an ordered pair (x, y).

Question 2

Short answer

Solve the system: x = y - 3 x + 2y = 15 Write your answer as an ordered pair (x, y).

Question 3

Short answer

Solve the system: y = 4x 2x + y = 12 Write your answer as an ordered pair (x, y).

Question 4

Short answer

Solve the system: x = 5y x + y = 18 Write your answer as an ordered pair (x, y).

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