Precalculus Examples

$f (x) = (2 x - 1) (x + 1) (x - 5)$

Step 1

The parent function is the simplest form of the type of function given.

$g (x) = x^{3}$

Step 2

The transformation being described is from $g (x) = x^{3}$ to $f (x) = (2 x - 1) (x + 1) (x - 5)$ .

$g (x) = x^{3} \to f (x) = (2 x - 1) (x + 1) (x - 5)$

Step 3

The horizontal shift depends on the value of $h$ . The horizontal shift is described as:

$f (x) = f (x + h)$ - The graph is shifted to the left $h$ units.

$f (x) = f (x - h)$ - The graph is shifted to the right $h$ units.

Horizontal Shift: Right $1.5$ Units

Step 4

The vertical shift depends on the value of $k$ . The vertical shift is described as:

$f (x) = f (x) + k$ - The graph is shifted up $k$ units.

$f (x) = f (x) - k$ - The graph is shifted down $k$ units.

Vertical Shift: Down $17.499$ Units

Step 5

The graph is reflected about the x-axis when $f (x) = - f (x)$ .

Reflection about the x-axis: None

Step 6

The graph is reflected about the y-axis when $f (x) = f (- x)$ .

Reflection about the y-axis: Reflected

Step 7

Compressing and stretching depends on the value of $a$ .

When $a$ is greater than $1$ : Vertically stretched

When $a$ is between $0$ and $1$ : Vertically compressed

Vertical Compression or Stretch: Stretched

Step 8

Compare and list the transformations.

Parent Function: $g (x) = x^{3}$

Horizontal Shift: Right $1.5$ Units

Vertical Shift: Down $17.499$ Units

Reflection about the x-axis: None

Reflection about the y-axis: Reflected

Vertical Compression or Stretch: Stretched

Step 9