Online Self-Tests(E16)

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  1. If x– 1 = –6, find the value of x².

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  (1 point)

  
  

  Answer:

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  2. Evaluate the expression below if x× (–3) = 9.

  2 × (x– 3)

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  (1 point)

  
  

  Answer:

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  3. Evaluate the expression below if x= 3 and y = –6.

  x + y

  2

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  (1 point)

  
  

  Answer:

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  4. Evaluate the expression below if x= –3 and y= –2.

  2x

  –

  4y

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  (1 point)

  
  

  Answer:

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  5. Evaluate the expression below if x= 56 and y= –8.

  x÷ y

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  (1 point)

  
  

  Answer:

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  6. If x× 6 = –18 and y= 1, find the value of (x– y)².

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  (1 point)

  
  

  Answer:

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