1. **Problem Statement:** Determine whether each function (A, B, and C) is linear or nonlinear based on their representations (table, graph, equation) and justify the answers.
2. **Function A (Table):**
- Given points: (3,5), (6,0), (9,-5), (12,-10).
- To check linearity, calculate the rate of change (slope) between consecutive points:
$$\text{slope} = \frac{\Delta y}{\Delta x}$$
- Between (3,5) and (6,0):
$$\frac{0 - 5}{6 - 3} = \frac{-5}{3} = -\frac{5}{3}$$
- Between (6,0) and (9,-5):
$$\frac{-5 - 0}{9 - 6} = \frac{-5}{3} = -\frac{5}{3}$$
- Between (9,-5) and (12,-10):
$$\frac{-10 - (-5)}{12 - 9} = \frac{-5}{3} = -\frac{5}{3}$$
- Since the slope is constant between all points, Function A is **linear**.
3. **Function B (Graph):**
- The graph is described as a downward sloping S-shaped curve.
- An S-shaped curve indicates the slope changes at different points (non-constant rate of change).
- Linear functions have straight-line graphs with constant slope.
- Therefore, Function B is **nonlinear**.
4. **Function C (Equation):**
- Given equation: $$y = 2x^2 + 3x - 8$$
- The presence of the $$x^2$$ term means the function is quadratic.
- Quadratic functions are nonlinear because their rate of change is not constant.
- Hence, Function C is **nonlinear**.
**Final answers:**
- Function A: Linear
- Function B: Nonlinear
- Function C: Nonlinear
Function Linearity 4Cbe06
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