Function Transformation Math Example 1

Follow the full solution, then compare it with the other examples linked below.

Example 1

easy
Describe all transformations applied to f(x)=x2f(x) = x^2 to obtain g(x)=2(xโˆ’3)2+1g(x) = 2(x-3)^2 + 1.

Solution

  1. 1
    Write in standard form y=aโ‹…f(b(xโˆ’h))+ky = a\cdot f(b(x-h))+k: here a=2a=2, b=1b=1, h=3h=3, k=1k=1.
  2. 2
    Horizontal shift: h=3h=3 shifts the parabola 33 units to the right (vertex moves from (0,0)(0,0) to (3,0)(3,0)).
  3. 3
    Vertical stretch: a=2a=2 stretches vertically by factor 22 (makes parabola narrower). Vertical shift: k=1k=1 shifts the entire graph 11 unit up. Final vertex: (3,1)(3, 1).

Answer

Shift right 33, stretch vertically by 22, shift up 11; vertex at (3,1)(3,1)
The transformation y=aโ‹…f(b(xโˆ’h))+ky = a\cdot f(b(x-h))+k encodes four independent transformations. Reading off aa, bb, hh, kk allows systematic description without re-deriving the graph from scratch.

About Function Transformation

A function transformation shifts, stretches, compresses, or reflects the graph of a parent function by modifying its formula in a systematic way.

Learn more about Function Transformation โ†’

More Function Transformation Examples