Question

Explain the error. A student was given a graph and asked to use the vertical line test

Answer 1

The answer is C.

There is a horizontal line test but the question asks to use the vertical line test. Using the horizontal line test you would get that the function is not one to one but using the vertical line test you would get its one to one.

Answer 2

The error that was made is: The student used a horizontal line, rather than a have more than one x-value paired to the same y-value, so there is no horizontal line test. The relation passes the vertical line test and is a function.

How to get the error

The student used a horizontal line, rather than a have more than one x-value paired to the same y-value, so there is no horizontal line test. The relation passes the vertical line test and is a function" is incorrect. Here's a breakdown explaining the flaws in this statement:

Horizontal Line Test: Unlike the vertical line test, the horizontal line test is not a standard method used to determine if a relation is a function.