Math Problem Statement
The graph of a piecewise function, f(x), is depicted above. Find its equation.
Solution
The graph shows a piecewise function, , made up of three distinct line segments. To find the equation of each segment, we will determine the slope and y-intercept for each part.
Identifying the intervals and finding the equations:
-
First segment (Leftmost horizontal line):
- This segment is horizontal and exists from to .
- The line is constant at (no slope), so the equation is:
-
Second segment (Middle line):
- This segment starts at and ends at .
- To find the slope ():
- Using the point-slope form with : Expanding: So, the equation for this segment is:
-
Third segment (Rightmost line):
- This segment starts at and continues upwards.
- Using points and to find the slope:
- Using point-slope form with : Expanding: So, the equation for this segment is:
Piecewise Function:
\begin{cases} -10 & \text{for} \quad x \leq -8 \\ \frac{5}{3}x + \frac{10}{3} & \text{for} \quad -8 < x \leq 1 \\ \frac{4}{3}x + \frac{11}{3} & \text{for} \quad x > 1 \end{cases}$$ Let me know if you'd like more details or have any questions! ### 5 Related Questions: 1. How do you derive the equation of a line given two points? 2. What are the key characteristics of piecewise functions? 3. How do you determine the continuity of a piecewise function? 4. Can a piecewise function have discontinuities? 5. How do you evaluate limits for piecewise functions at boundary points? ### Tip: When working with piecewise functions, always carefully check the boundaries of each piece to ensure correct application of the function's domain.Ask a new question for Free
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Math Problem Analysis
Mathematical Concepts
Piecewise Functions
Linear Equations
Slope-Intercept Form
Point-Slope Form
Formulas
Slope formula: m = (y2 - y1) / (x2 - x1)
Slope-intercept form: y = mx + b
Point-slope form: y - y1 = m(x - x1)
Theorems
Linear equation properties
Piecewise function definition
Suitable Grade Level
Grades 10-12