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In $13-20$ : a. Graph each function. b. Is the function a direct variation? $c$ . Is the function one-to-one? $y=\sqrt{x}$

Based on the graph above, the function is one-to-one.

Algebra

Chapter 4

RELATIONS AND FUNCTIONS

Section 3

Linear Functions and Direct Variation

An Introduction to Geometry

Functions

Linear Functions

Polynomials

Missouri State University

Campbell University

Lectures

01:32

In mathematics, the absolu…

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In $13-20$ : a. Graph each…

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For each function:a) G…

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Graph each function using …

and this problem were first asked a graph. The function wise equals the square root of X. First, look at the domain and range of dysfunction. You can only take the square root of a positive number or zero, so exc has to be in non negative number. In other words, access we more than or equal to zero. This great root of any real number is positive or zero. So likewise. Why house being more than or equal to zero now we can look at some points on this graph when exit equal to zero Y is equal to zero when X is equal to four wise eagle to two and so on. This will give us a function that looks like this now asked to determine if this function is a direct variation in order for a function to be a direct variation and its appeal in your function that is 1 to 1. As you can see, the ratio between these two variables is not constant, so this cannot be linear function and therefore is not a direct variation. However, this function is 1 to 1. We can see this by using the horizontal line test. No matter where we draw a horizontal line, the function will only intersects, the line added, unless one point so this function is 1 to 1.

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