Question

Identify the mapping diagram that represents the relation and determine whether the relation is a function.

Answer 1

looks like you are raising the number 3 to the power of whatever the first coordinate is
\(3^1=3,3^2=9,3^3=27,...\)

Answer 2

y = x3
y = 3x
y = 3x
y = x + 2
???

Answer 3

3^x i believe

Answer 4

\[(n,\ 3^n),\ n\in Z^+\]