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only the last one since the others don’t pass the vertical line test

which is when you draw a straight line down your function and if it hits 2 or more points it is not a function

The correct graph should have x values that have no more than one y value.

What is function graph ?

  • The collection of all points in the plane with the form (x, f(x)) that make up a function f's graph.
  • We may alternatively say that the graph of f is the graph of y = f. (x).
  • As a result, the graph of an equation is a particular instance of the graph of a function.

Type of  function graph ?

Depending on the kind of function that is graphed, various graph types exist.

Linear, power, quadratic, polynomial, rational, exponential, logarithmic, and sinusoidal graphs are the eight most often used types.

Learn more about function graph https://brainly.com/question/9834848

here

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