Answer
$y=3^x$.
Work Step by Step
Step 1. As the graph passes $(0,1)$, we can assume the function has the form of $y=a^x$.
Step 2. Use point $(1,3)$, we have $3=a$, thus the answer is $y=3^x$.
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0-32193-104-1
ISBN 13:
978-0-32193-104-7
Chapter 4 - Exponential and Logarithmic Functions - Section 4.3 Exponential Functions - 4.3 Assess Your Understanding - Page 307: 85
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