hey i am doing math arithmetic and geometric sequences and i don't get my hw its goes like these if f(3)=5andf(4)8...

Question

jdoe0001 · Answer

$\large {
\begin{array}{llllllll}
f(&{\color{brown}{ 3}})=&{\color{blue}{ 5}}&f(&{\color{brown}{ 4}})=&{\color{blue}{ 8}}\
&{\color{brown}{ x}}&{\color{blue}{ y}}&&{\color{brown}{ x}}&{\color{blue}{ y}}

\end{array}\implies 
\begin{array}{llll}
x&y
\\hline\
1^{st}\ term&\
2^{nd}\ term&\
{\color{brown}{ 3}}^{rd}\ term&{\color{blue}{ 5}}\
{\color{brown}{ 4}}^{th}\ term&{\color{blue}{ 8}}\
5^{th}\ term&\

\end{array}
}$