📈Linear functions: math practice, grades 7–8

Practise “Linear functions” online for free. Five right answers in a row make the tasks harder, two mistakes in a row make them easier. Right answers earn coins for games.

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Example problems

These are only examples: the practice makes new tasks every time.

1. y = 5x + 1
   x = 1
   y = ?

   Answer

   6

2. y = 5x
   x = −3
   y = ?

   Answer

   −15

3. y = −x + 2
   y = 4
   x = ?

   Answer

   −2

4. y = x − 6
   y = −10
   x = ?

   Answer

   −4

5. The line y = kx passes through (−2, −6). Find k.

   y = kx
   k = ?

   Answer

   3

6. y = 4x − 8
   y = 0
   x = ?

   Answer

   2

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