# Chapter 2, Functions - Section 2.3 - Getting Information from the Graph of a Function - 2.3 Exercises: 31

(a) domain: $[-1,4]$, range: $[-1,3]$ (b) increasing: $(-1,1)$ and $(2,4)$, decreasing:$(1,2)$

#### Work Step by Step

(a) The domain consists of the values that $x$ takes on and the range consists of values that $y$ takes on. We see from the graph that the domain is: $[-1, 4]$ and the range is: $[-1, 3]$. (b) We see from the graph that the function is increasing for $x$ intervals $(-1,1)$ and $(2,4)$ and decreasing for $x$ interval $(1,2)$.

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