Connecting Rules

x = 3

y = 4

Find 20 rules connecting x and y

Eg. 5y - 17 = x



Topics: Starter | Algebra

  • Jules, Longton High School
  • Tuesday, January 26, 2010
  • "5. More like this please!"
  • Transum,
  • Tuesday, August 20, 2013
  • "This starter provides an open ended opportunity for pupils to demonstrate what they can remember about algebra. It is a suitable activity for most ability levels and a quick walk around the classroom to see what pupils are writing provides a quick assessment of their understanding and imagination."

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There are of course no end of correct answers and here are some examples.

There is at least one mistake. Can you find the errors when x=3 and y=4?

x + y = 7 x - y = -1 y - x = 1
2x + 3y = 22 5x - 2y = 7 4y - x = 13
xy - 10 = 2 180 - 2x + y = 178 20x - 3xy = 24
x2 + y = 13 10x - y2 = 25 y2 - x2 = 7
x2y + 13 = 62 x2y2 - 2x = 138 x2y3 = 576
x! + y = 10 5(x + y) = 35 3y รท x = 4
= 6
= 27
= y

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The errors are in equations numbered: 4, 11, 13, 20,


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