Math Problem Statement
Which of the following functions could be used to find the nth term in the table?
Solution
To determine which function can be used to describe the values in the table, let’s analyze the table and compare it with the given options.
Step 1: Observing the Table
The table provides pairs of and :
1 | -4 |
2 | -14 |
3 | -30 |
4 | -52 |
We can see that is negative and decreasing rapidly. This suggests it might be a quadratic function.
Step 2: General Quadratic Form
The general quadratic form is:
We can test the given options (no linear terms ) step by step.
Step 3: Testing
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Substituting : f(1) = 4(1)^2 = 4 \quad \text{(but table shows -4)}. There is a difference of . Adjusting, we rewrite:
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Check for : [ f(2) = 4(2)^2 - 8 = 4(4) - 8 = 16 - 8 = - they
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Math Problem Analysis
Mathematical Concepts
Quadratic Functions
Algebra
Formulas
f(x) = ax^2 + bx + c
Theorems
Quadratic relationships in sequences
Suitable Grade Level
Grades 8-10