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If f(x) = x^2, what is f(-3)?

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Question: If f(x) = x^2, what is f(-3)?

Options:

  1. 3
  2. 6
  3. 9
  4. 12

Correct Answer: 9

Solution: 

f(-3) = (-3)^2 = 9.

If f(x) = x^2, what is f(-3)?

Practice Questions

Q1
If f(x) = x^2, what is f(-3)?
  1. 3
  2. 6
  3. 9
  4. 12

Questions & Step-by-Step Solutions

If f(x) = x^2, what is f(-3)?
  • Step 1: Identify the function f(x) which is given as f(x) = x^2.
  • Step 2: Substitute -3 into the function for x. This means we will calculate f(-3).
  • Step 3: Replace x in the function with -3. So, we have f(-3) = (-3)^2.
  • Step 4: Calculate (-3)^2. This means multiplying -3 by itself: -3 * -3.
  • Step 5: The result of -3 * -3 is 9.
  • Step 6: Therefore, f(-3) = 9.
  • Function Evaluation – Understanding how to evaluate a function at a given input.
  • Quadratic Functions – Recognizing the properties of quadratic functions, specifically the squaring operation.
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