Math Problem Statement

Determine whether the function given by the table is​ linear, exponential, or neither. If the function is​ linear, find a linear function that models the​ data; if it is​ exponential, find an exponential function that models the data. . . . Question content area top right Part 1   x ​f(x) minus1 1 0 2 1 4 2 6 3 10 Question content area bottom Part 1 Select the correct choice below and fill in any answer boxes within your choice. A. The function is exponential. An exponential function that models the data is ​f(x)equals    enter your response here. ​(Simplify your​ answer.) B. The function is linear. A linear function that models the data is ​f(x)equals    enter your response here. ​(Simplify your​ answer.) C. The function is neither linear nor exponential.

Solution

To determine whether the function is linear, exponential, or neither, we will analyze the table data step-by-step.

Table:

xxf(x)f(x)
1-11
002
114
226
3310

Step 1: Check for linearity

A linear function has a constant difference between consecutive f(x)f(x) values when xx increases by 1.

  1. From x=1x = -1 to x=0x = 0: f(0)f(1)=21=1f(0) - f(-1) = 2 - 1 = 1
  2. From x=0x = 0 to x=1x = 1: f(1)f(0)=42=2f(1) - f(0) = 4 - 2 = 2
  3. From x=1x = 1 to x=2x = 2: f(2)f(1)=64=2f(2) - f(1) = 6 - 4 = 2
  4. From x=2x = 2 to x=3x = 3: f(3)f(2)=106=4f(3) - f(2) = 10 - 6 = 4

The differences are not constant (1,2,41, 2, 4), so the function is not linear.

Step 2: Check for exponential behavior

An exponential function has a constant ratio between consecutive f(x)f(x) values.

  1. From x=1x = -1 to x=0x = 0: f(0)f(1)=21=2\frac{f(0)}{f(-1)} = \frac{2}{1} = 2
  2. From x=0x = 0 to x=1x = 1: f(1)f(0)=42=2\frac{f(1)}{f(0)} = \frac{4}{2} = 2
  3. From x=1x = 1 to x=2x = 2: f(2)f(1)=64=1.5\frac{f(2)}{f(1)} = \frac{6}{4} = 1.5
  4. From x=2x = 2 to x=3x = 3: f(3)f(2)=1061.67\frac{f(3)}{f(2)} = \frac{10}{6} \approx 1.67

The ratios are not constant (2,1.5,1.672, 1.5, 1.67), so the function is not exponential.

Conclusion:

Since the function is neither linear nor exponential, the correct answer is:

C. The function is neither linear nor exponential.


Follow-Up Questions:

  1. Would you like to analyze if this function could fit another type of model?
  2. Do you need help visualizing the data with a graph?
  3. Should we explore potential polynomial fits for this data?
  4. Do you need step-by-step guidance on identifying non-linear functions?
  5. Would you like me to explain why constant differences and ratios define linear and exponential functions?

Tip:

When analyzing a table of values, always calculate both first differences (for linearity) and ratios (for exponential growth) to identify the type of function.

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Math Problem Analysis

Mathematical Concepts

Linear Functions
Exponential Functions
Sequences and Patterns

Formulas

Linear Function: f(x) = mx + b
Exponential Function: f(x) = a * b^x

Theorems

Constant Difference Test for Linearity
Constant Ratio Test for Exponential Functions

Suitable Grade Level

Grades 9-11