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Year 9 maths · J.5 · Systems of equations

Solve a system by substitution: one equation solved for y

Use substitution or elimination so that you find x and y. Write your answer as (x, y).

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  1. Solve the system: y = −5x + 7 and x − y = −1. Write your answer as (x, y).

    Answer: (1, 2)

  2. Solve the system: y = 4x + 26 and x − 2y = −10. Write your answer as (x, y).

    Answer: (-6, 2)

  3. Solve the system: y = −x − 6 and 3x + 2y = −17. Write your answer as (x, y).

    Answer: (-5, -1)

Tip: Use substitution or elimination so that you find x and y. Write your answer as (x, y).

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