# How do you find the domain and range of a rational function graph?

## How do you find the domain and range of a rational function graph?

To find the excluded value in the domain of the function, equate the denominator to zero and solve for x . So, the domain of the function is set of real numbers except −3 . The range of the function is same as the domain of the inverse function. So, to find the range define the inverse of the function.

### How do domain and range change with transformations affect?

When a function is transformed, its domain and/or range will change. If only the inputs are transformed, then only the domain will change. If only the outputs are transformed, then only the range will change. If both the inputs and outputs are transformed, then both the domain and range will change.

**What is the range of a transformation?**

The range of a linear transformation f : V → W is the set of vectors the linear transformation maps to. This set is also often called the image of f, written ran(f) = Im(f) = L(V ) = {L(v)|v ∈ V } ⊂ W. (U) = {v ∈ V |L(v) ∈ U} ⊂ V. A linear transformation f is one-to-one if for any x = y ∈ V , f(x) = f(y).

**How do you identify the domain and range of a function?**

To find the domain and range, we simply solve the equation y = f(x) to determine the values of the independent variable x and obtain the domain. To calculate the range of the function, we simply express x as x=g(y) and then find the domain of g(y).

## How do translations affect domain and range?

Translations and the Effect on Domain & Range Any horizontal translation will affect the domain and leave the range unchanged. Any vertical translation will affect the range and the leave the domain unchanged. Apply the same translation to the domain or range that you apply to the x-coordinates or the y-coordinates.

### How do you describe a transformation on a graph?

Reflections are mirror images. Think of “folding” the graph over the x-axis. (x, f (x)) → (x, -f (x))….

Transformations of Function Graphs | |
---|---|

-f (x) | reflect f (x) over the x-axis |

k•f (x) | multiply y-values by k (k > 1 stretch, 0 < k < 1 shrink vertical) |

f (kx) | divide x-values by k (k > 1 shrink, 0 < k < 1 stretch horizontal) |

**What is the easiest way to find the domain and range?**

**How do you find the domain and range?**

## What is the order of transformations on a graph?

If two or more of the transformations have a vertical effect on the graph, the order of those transformations will most likely affect the graph. If two or more of the transformations have a horizontal effect on the graph, the order of those transformations will most likely affect the graph.