# Quick Answer: How Do You Know If Compression Is Vertical Or Stretched?

## What is a vertical shift?

Vertical shifts are outside changes that affect the output ( y- ) axis values and shift the function up or down.

Combining the two types of shifts will cause the graph of a function to shift up or down and right or left..

## How do you find a vertical asymptote?

Vertical asymptotes can be found by solving the equation n(x) = 0 where n(x) is the denominator of the function ( note: this only applies if the numerator t(x) is not zero for the same x value). Find the asymptotes for the function . The graph has a vertical asymptote with the equation x = 1.

## How do you vertically stretch a log?

A General Note: Vertical Stretches and Compressions of the Parent Function y=logb(x) stretches the parent function y=logb(x) y = l o g b ( x ) vertically by a factor of a if a > 1. compresses the parent function y=logb(x) y = l o g b ( x ) vertically by a factor of a if 0 < a < 1.

## What is a horizontal shrink?

A horizontal stretch or shrink by a factor of 1/k means that the point (x, y) on the graph of f(x) is transformed to the point (x/k, y) on the graph of g(x). Examples of Horizontal Stretches and Shrinks. Consider the following base functions, (1) f (x) = x2 – 3, (2) g(x) = cos (x).

## How do you tell if a graph is horizontally stretched or compressed?

If a > 1 \displaystyle a>1 a>1, then the graph will be stretched.If 0 < a < 1, then the graph will be compressed.If a < 0 \displaystyle a<0 a<0, then there will be combination of a vertical stretch or compression with reflection.

## How do you do vertical compression?

In general, when a function is compressed vertically by a (where 0 < a < 1), the graph shrinks by the same scale factor. Let's apply the concept so that we can compress f(x) = 6|x| + 8 by a scale factor of 1/2. To compress f(x), we'll multiply the output value by 1/2.

## How do you find vertical translation?

Vertically translating a graph is equivalent to shifting the base graph up or down in the direction of the y-axis. A graph is translated k units vertically by moving each point on the graph k units vertically. g (x) = f (x) + k; can be sketched by shifting f (x) k units vertically.

## How do you do a vertical stretch by a factor of 3?

If g(x) = 3f (x): For any given input, the output iof g is three times the output of f, so the graph is stretched vertically by a factor of 3. If g(x) = f (3x): For any given output, the input of g is one-third the input of f, so the graph is shrunk horizontally by a factor of 3.

## How do you find the vertical stretch of a rational function?

Given a simple rational function, f, and a new function g such that , then: Ø If , then the graph of g is a vertical stretch of the graph of f by a factor of c. Ø If , then the graph of g is a vertical compression of the graph of f by a factor of c.

## How do you find the domain?

The domain of a function is the set of all possible inputs for the function. For example, the domain of f(x)=x² is all real numbers, and the domain of g(x)=1/x is all real numbers except for x=0. We can also define special functions whose domains are more limited.

## How do you know if it is a vertical or horizontal stretch?

Key TakeawaysWhen by either f(x) or x is multiplied by a number, functions can “stretch” or “shrink” vertically or horizontally, respectively, when graphed.In general, a vertical stretch is given by the equation y=bf(x) y = b f ( x ) . … In general, a horizontal stretch is given by the equation y=f(cx) y = f ( c x ) .

## What is a vertical stretch?

Vertical stretch occurs when a base graph is multiplied by a certain factor that is greater than 1. This results in the graph being pulled outward but retaining the input values (or x). When a function is vertically stretched, we expect its graph’s y values to be farther from the x-axis.

## What is a vertical and horizontal stretch?

vertical stretching/shrinking changes the y -values of points; transformations that affect the y -values are intuitive. horizontal stretching/shrinking changes the x -values of points; transformations that affect the x -values are counter-intuitive.