# Chapter 4 - Exponential and Logarithmic Functions - Concept and Vocabulary Check: 8

fill the blanks with: y x=0 vertical

#### Work Step by Step

Book reference: see Characteristics of Logarithmic Functions, page 460$:$ 5. The graph of $f(x)=\log_{b}x$ approaches. but does not touch, the y-axis. The y-axis, or $x=0$, is a vertical asymptote.

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