Questions: Graph the exponential function represented in the table.
x -1 0 1 2
w(x) 1.5 3 6 12
Transcript text: Graph the exponential function represented in the table.
\begin{tabular}{|c|c|c|c|c|}
\hline$x$ & -1 & 0 & 1 & 2 \\
\hline$w(x)$ & 1.5 & 3 & 6 & 12 \\
\hline
\end{tabular}
Solution
Solution Steps
Step 1: Identify the Exponential Function
Given the table:
\[
\begin{array}{c|c}
x & W(x) \\
\hline
-1 & 1.5 \\
0 & 3 \\
1 & 6 \\
2 & 12 \\
\end{array}
\]
We need to identify the exponential function \( W(x) \).
Step 2: Determine the Base of the Exponential Function
Notice the pattern in the values of \( W(x) \):
\( W(0) = 3 \)
\( W(1) = 6 \)
\( W(2) = 12 \)
The function appears to double for each increment of \( x \). This suggests the function is of the form \( W(x) = 3 \cdot 2^x \).
Step 3: Verify the Function
Verify the function \( W(x) = 3 \cdot 2^x \) with the given values:
For \( x = -1 \): \( W(-1) = 3 \cdot 2^{-1} = 3 \cdot \frac{1}{2} = 1.5 \)
For \( x = 0 \): \( W(0) = 3 \cdot 2^0 = 3 \)
For \( x = 1 \): \( W(1) = 3 \cdot 2^1 = 6 \)
For \( x = 2 \): \( W(2) = 3 \cdot 2^2 = 12 \)
The function \( W(x) = 3 \cdot 2^x \) matches all the given values.
Step 4: Match the Graph
Compare the function \( W(x) = 3 \cdot 2^x \) with the provided graphs. The correct graph should show an exponential growth starting at \( W(0) = 3 \) and doubling for each increment of \( x \).
Final Answer
The correct graph is the first one, which shows the exponential growth pattern consistent with \( W(x) = 3 \cdot 2^x \).