Answer
a. Yes. No. Yes. No.
b. $T=\{(1,-2), (2,-1), (3,0)\}$
c. The domain is $E=\{1,2,3\}$. The codomain is $F=\{-2,-1,0\}$.
d.
Work Step by Step
Be careful of minus signs: $\frac{1-(-2)}{3}=1$, $\frac{2-(-1)}{3}=1$, and $\frac{3-0}{3}=1$.
Discrete Mathematics with Applications 4th Edition
by Epp, Susanna S.
Published by
Cengage Learning
ISBN 10:
0-49539-132-8
ISBN 13:
978-0-49539-132-6
Chapter 1 - Speaking Mathematically - Exercise Set 1.3 - Page 21: 3
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