Math Problem Statement

Function g is a transformation of the parent function f(x) = x2. The graph of g is a translation left 4 units and down 2 units of the graph of f. Write the equation for g in the form y = ax2 + bx + c.

Solution

The parent function is f(x)=x2f(x) = x^2. The transformation described involves translating the graph of f(x)f(x) left by 4 units and down by 2 units.

Step 1: Translation left 4 units

A leftward translation of 4 units changes the input xx to x+4x + 4. So, the function becomes: g(x)=(x+4)2g(x) = (x + 4)^2

Step 2: Translation down 2 units

A downward translation of 2 units subtracts 2 from the function: g(x)=(x+4)22g(x) = (x + 4)^2 - 2

Step 3: Expand and simplify the equation

Now, expand (x+4)2(x + 4)^2: (x+4)2=x2+8x+16(x + 4)^2 = x^2 + 8x + 16 Thus, the function becomes: g(x)=x2+8x+162g(x) = x^2 + 8x + 16 - 2 Simplify: g(x)=x2+8x+14g(x) = x^2 + 8x + 14

Final equation:

g(x)=x2+8x+14g(x) = x^2 + 8x + 14

This is the equation of the transformed function in the form y=ax2+bx+cy = ax^2 + bx + c.

Do you want more details or have any questions?

Here are 5 related questions to expand on this concept:

  1. What would be the equation if the graph were shifted right 3 units and up 5 units?
  2. How does a vertical stretch or compression affect the graph's equation?
  3. What is the vertex of the function g(x)=x2+8x+14g(x) = x^2 + 8x + 14?
  4. How would a reflection over the x-axis change the equation of the function?
  5. How would you find the x-intercepts of g(x)g(x)?

Tip: Always expand and simplify the quadratic equation after performing translations to ensure it is in standard form.

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Math Problem Analysis

Mathematical Concepts

Algebra
Transformations of Functions
Quadratic Equations

Formulas

Transformation of functions
Quadratic equation formula y = ax^2 + bx + c

Theorems

Transformation theorem for translations of functions

Suitable Grade Level

Grades 9-11