Math Problem Statement

The functions f and g are graphed in the same rectangular coordinate system. If g is obtained from f through a sequence of transformations, find an equation for g.

Solution

In the image provided, we are asked to find the equation for the function g(x)g(x), which is obtained from the function f(x)=x2f(x) = x^2 by a sequence of transformations.

By observing the graph, it seems that the function g(x)g(x) (blue graph) is a transformation of f(x)f(x) (black graph). The transformations include:

  1. Reflection across the x-axis: This changes the sign of the function, making g(x)=f(x)g(x) = -f(x), or g(x)=x2g(x) = -x^2.
  2. Horizontal shift: The vertex of g(x)g(x) is shifted to the right. The vertex of f(x)f(x) is at the origin (0,0)(0, 0), while the vertex of g(x)g(x) seems to be at x=5x = 5, so this involves a shift 5 units to the right, giving the transformation g(x)=(x5)2g(x) = -(x - 5)^2.
  3. Vertical shift: Finally, the graph of g(x)g(x) is shifted downward by 5 units, leading to the transformation g(x)=(x5)25g(x) = -(x - 5)^2 - 5.

Thus, the equation for g(x)g(x) is: g(x)=(x5)25g(x) = -(x - 5)^2 - 5

Would you like more details on these transformations or further explanation? Here are 5 related questions:

  1. How would the equation change if the graph were shifted upward instead of downward?
  2. What is the effect of reflecting a function across the y-axis instead of the x-axis?
  3. Can you identify the transformation steps if the vertex of the transformed function is at (3,2)(-3, -2)?
  4. How do we perform vertical stretching or shrinking on a quadratic function?
  5. How can we combine multiple transformations into a single equation?

Tip: When identifying transformations, always look at changes to the vertex and orientation of the graph as a starting point.

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Math Problem Analysis

Mathematical Concepts

Algebra
Quadratic Transformations
Graph Shifting
Reflections

Formulas

g(x) = a(x-h)^2 + k

Theorems

Transformation of Functions
Reflections and Shifts

Suitable Grade Level

Grades 9-12