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    Mathematics
    Grade10
    Easy

    Question

    Tell whether (11, 11) is on the graph of f(x) = IxI. If it is, give the coordinates of another point with the same y value.

    1. Yes, (-11, 11)    
    2. No    
    3. Yes, open parentheses 1 over 11 comma space 11 close parentheses    
    4. Yes, open parentheses fraction numerator negative 1 over denominator 11 end fraction comma space 11 close parentheses    

    hintHint:

    We simply plug in the values of x given in the coordinates to check the status of the said point. Then, we put the same value of x with the opposite sign and find the corresponding value of y.

    The correct answer is: Yes, (-11, 11)

      Step 1 of 2:
      x = 11, f(x) = I11I = 11
      So, yes, (11, 11) is on the graph.
      Step 2 of 2:
      Now, for x = -11, f(x) = I(-11)I = 11
      So, (-11, 11) is on the graph.
      Final Answer:
      The right choice is-- B. Yes, (-11, 11)

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