Question

Which relation is NOT a function

Answer 1

A function is a relation in which every input has one output.

Relation 1 is a set of points where each x value has a single y value. function

Relation 2 is an equation of a line. With the exception of vertical lines, all lines are functions. This example is not a vertical line. function

Relation 3 is a graph of an absolute value equation (y=|x|-1). We can use the vertical line test and see that it is a function.

Relation 4 has input two traveling to two outputs (A and B). So it is not a function.

Answer: 4

Answer 2

Answer:

4

Step-by-step explanation:

A function had to have 1 output for every input and in 4, 2 had A and B as the output, therefore, it isn't a function.