Math Problem Statement
Write a piecewise function represented by the graph.
A graph of a piecewise function. One linear piece goes through ordered pair negative 4 comma negative 6 and ends at a closed dot at ordered pair negative 2 comma negative 2. A second linear piece begins at the same closed dot at ordered pair negative 2 comma negative 2 and goes through ordered pair 2 comma 0.
Solution
To write the piecewise function represented by the graph, we need to define each linear piece separately.
Step 1: First Linear Piece (From to )
The first segment goes through the points and . We will determine the equation of the line using the slope-intercept form .
Find the slope :
So, the slope .
Use point-slope form to find the equation:
Using point and the slope , the equation of the line is:
Thus, the equation for the first piece is , valid for .
Step 2: Second Linear Piece (From to )
The second segment goes through the points and .
Find the slope :
So, the slope .
Use point-slope form to find the equation:
Using point and the slope , the equation of the line is:
Thus, the equation for the second piece is , valid for .
Piecewise Function:
Now, we can write the piecewise function:
\begin{cases} 2x + 2 & \text{if } -4 \leq x \leq -2 \\ \frac{1}{2}x - 1 & \text{if } -2 < x \leq 2 \end{cases}$$ Would you like further details on any part of this? Here are some related questions to deepen your understanding: 1. How do you find the slope between two points? 2. What is the point-slope form of a line, and when is it used? 3. Can a piecewise function be continuous? Why or why not? 4. How would you graph this piecewise function? 5. What is the domain of this piecewise function? **Tip:** When working with piecewise functions, always check if the pieces are connected at the boundary points!Ask a new question for Free
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Math Problem Analysis
Mathematical Concepts
Piecewise Functions
Linear Equations
Graph Interpretation
Formulas
Slope formula: m = (y2 - y1) / (x2 - x1)
Point-slope form: y - y1 = m(x - x1)
Theorems
Linearity of Piecewise Functions
Suitable Grade Level
Grades 9-12