Math Problem Statement

The graph consists of three segments: a line segment from (-2, -5) to (-1, -3), a line segment from (-1, -2) to (4, 3), and a horizontal line from (4, 2) extending to the right.

Solution

The description of the graph includes three segments:

  1. Line Segment 1: From (2,5)(-2, -5) to (1,3)(-1, -3).
  2. Line Segment 2: From (1,2)(-1, -2) to (4,3)(4, 3).
  3. Horizontal Line: Starting at (4,2)(4, 2) and extending to the right.

Let’s break down each segment and provide the equations of these line segments.

1. Equation of the First Segment

To find the equation of the line between (2,5)(-2, -5) and (1,3)(-1, -3), we start by calculating the slope mm:

m=y2y1x2x1=3(5)1(2)=21=2.m = \frac{y_2 - y_1}{x_2 - x_1} = \frac{-3 - (-5)}{-1 - (-2)} = \frac{2}{1} = 2.

Using the point-slope form yy1=m(xx1)y - y_1 = m(x - x_1), the equation is:

y+5=2(x+2).y + 5 = 2(x + 2).

Simplifying:

y=2x1.y = 2x - 1.

2. Equation of the Second Segment

Next, for the line between (1,2)(-1, -2) and (4,3)(4, 3):

m=3(2)4(1)=55=1.m = \frac{3 - (-2)}{4 - (-1)} = \frac{5}{5} = 1.

Using the point-slope form:

y+2=1(x+1).y + 2 = 1(x + 1).

Simplifying:

y=x1.y = x - 1.

3. Equation of the Horizontal Line

The horizontal line starts at (4,2)(4, 2) and extends rightwards, meaning it has a constant yy-value of 2. The equation is:

y=2.y = 2.

Would you like further details or have any questions about this? Here are some follow-up questions to explore:

  1. How can we find the intersection points of these line segments?
  2. What is the domain and range of the graph described?
  3. How would the graph look visually with these equations plotted?
  4. How would these line equations change if they were translated upwards by 3 units?
  5. What would be the effect on the graph if the slope of each line segment was doubled?

Tip: When working with line segments, always ensure to check the endpoints to correctly represent the limited segment rather than the whole line!

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Math Problem Analysis

Mathematical Concepts

Linear Equations
Geometry of Lines
Slopes
Line Segments

Formulas

Slope formula m = (y2 - y1) / (x2 - x1)
Point-slope form y - y1 = m(x - x1)

Theorems

Basic properties of lines and slopes

Suitable Grade Level

Grades 9-10