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A function is given by a table of values, a graph, a formula, or a verbal description. Determine whether it is one-to-one.
$f$ is not one-to-one because $2 \neq 6,$ but $f(2)=2.0=f(6)$
00:41
Jeffrey P.
Calculus 1 / AB
Calculus 2 / BC
Calculus 3
Chapter 1
Functions and Models
Section 5
Inverse Functions and Logarithms
Functions
Integration Techniques
Partial Derivatives
Functions of Several Variables
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The question here is whether or not F is a 1 to 1 function. So in order to be 1 to 1 for every X value, there's only one why value? And for every y value, there's only one X value. So when we look at the table, we see that we have a Y value of 2.0, that corresponds to two different X values, so that means it's not 1 to 1.
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