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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