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Home > CC4 > Chapter 2 > Lesson 2.1.3 > Problem 2-34


Which graphs below have a domain of all real numbers? Which have a range of all real numbers? Which are functions? Homework Help ✎

  1. graph a

  1. graph b

  1. graph c

In which graph do all values of x have a corresponding y-value?
Refer to the Math Notes box in Lesson 1.2.5.

Graphs (a) and (b)

In which graphs do all values of y have a corresponding x-value?

Graphs (a) and (c)

A function can only have one -value for each -value.