The table shows the outputs, y, for different inputs, x:Input (x) 2 5 9 12Output (y) 20 15 12 8Part A: Do the data in this table represent a function? Justify your answer. (3 points)Part B: Compare the data in the table with the relation f(x) = 5x + 14. Which relation has a greater value when x = 9? (2 points)Part C: Using the relation in Part B, what is the value of x if f(x) = 64? (5 points)
Accepted Solution
A:
a)
[tex]\bf \begin{array}{l|lllll}
x&2&5&9&12\\
y&20&15&12&8
\end{array}
\begin{array}{llll}
\impliedby \textit{notice the x-values do not re} peat\\
\qquad \textit{therefore is a function}
\end{array}[/tex]