Math Problem Statement

Use transformations on the basic quadratic function f(x) = x^2 to write a rule y = f(x) that would produce the given graph.

Solution

The problem requires using transformations of the basic quadratic function f(x)=x2f(x) = x^2 to match the new graph shown.

Observations:

  • The basic quadratic function f(x)=x2f(x) = x^2 has a vertex at (0,0)(0, 0) and opens upwards.
  • In the given transformed graph, the vertex has shifted downward, and the new graph opens upwards as well, but it is vertically stretched.

Step-by-step analysis:

  1. Vertical Shift: The vertex in the new graph is at (0,6)(0, -6) rather than (0,0)(0, 0). This indicates a downward shift by 6 units.

    • So, the transformation includes: f(x)=x26f(x) = x^2 - 6.
  2. Vertical Stretch: The graph appears narrower, which suggests a vertical stretch. The basic quadratic function passes through points like (1,1)(-1, 1), but in the transformed graph, this point seems to be stretched to higher values.

    • We need to multiply the function by a constant aa to account for the stretch.

Let’s estimate the stretch factor using one of the points from the graph.

  • From the table, at x=1x = 1, the value is f(x)=1f(x) = 1.
  • In the transformed graph, at x=1x = 1, the value seems to be about 33.

Thus, the stretch factor aa satisfies: a(12)6=3a6=3a=9a(1^2) - 6 = 3 \quad \Rightarrow \quad a - 6 = 3 \quad \Rightarrow \quad a = 9

Conclusion:

The transformation involves a vertical stretch by a factor of 9 and a downward shift by 6 units. Thus, the rule that would produce the given graph is: f(x)=9x26f(x) = 9x^2 - 6

Would you like further details or have any questions about the transformations?

Here are 5 relative questions to deepen your understanding:

  1. How would the graph look if the quadratic function were horizontally shifted?
  2. What would happen if we applied a reflection over the x-axis to this graph?
  3. Can you explain how a vertical compression would affect the graph?
  4. How does the value of aa in the equation f(x)=ax2f(x) = ax^2 impact the shape of the parabola?
  5. What if the transformation included both horizontal and vertical shifts?

Tip: When applying transformations, always handle shifts first (up/down or left/right), then apply stretches or compressions, and lastly reflections if necessary.

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Math Problem Analysis

Mathematical Concepts

Algebra
Quadratic Functions
Graph Transformations

Formulas

f(x) = ax^2 + bx + c

Theorems

Properties of Parabolas

Suitable Grade Level

Grades 9-12