1. **Problem Statement:** Analyze the linear function passing through points $(-1,1)$, $(0,0)$, and $(2,5)$.
2. **Formula and Rules:** The equation of a line through two points $(x_1,y_1)$ and $(x_2,y_2)$ is given by the slope-intercept form:
$$y = mx + b$$
where the slope $m = \frac{y_2 - y_1}{x_2 - x_1}$ and $b$ is the y-intercept.
3. **Calculate the slope $m$ using points $(0,0)$ and $(2,5)$:**
$$m = \frac{5 - 0}{2 - 0} = \frac{5}{2}$$
4. **Find the y-intercept $b$ using point $(0,0)$:**
$$0 = \frac{5}{2} \times 0 + b \implies b = 0$$
5. **Write the equation of the line:**
$$y = \frac{5}{2}x$$
6. **Check the point $(-1,1)$:**
$$y = \frac{5}{2} \times (-1) = -\frac{5}{2} \neq 1$$
This indicates the points are not collinear, so the line passing through $(0,0)$ and $(2,5)$ is the correct linear function.
7. **Summary of properties:**
- Degree: 1 (linear)
- Shape: Straight line
- Leading Coefficient: $\frac{5}{2}$ (positive)
- Number of x-intercepts: 1
- x-intercepts: $(0,0)$
- y-intercepts: $(0,0)$
- End behavior: As $x \to \infty$, $y \to \infty$; as $x \to -\infty$, $y \to -\infty$
- Domain: $(-\infty, \infty)$
- Range: $(-\infty, \infty)$
- Number of Turning Points: 0
Final answer:
$$y = \frac{5}{2}x$$
Linear Line 000D2C
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