Math Problem Statement
Solution
To find the equation of the line in slope-intercept form , where is the slope and is the y-intercept, let's break down the components from the image:
1. Slope (m):
The slope of the line can be calculated using the formula: From the image, the line passes through two points: (-4, 0) and (0, -2).
- Rise: The vertical change between the two points is from to , giving a rise of -2.
- Run: The horizontal change between the two points is from to , giving a run of 4.
Thus, the slope .
2. Y-intercept (b):
The y-intercept is the point where the line crosses the y-axis. From the graph, the line crosses the y-axis at , so .
Final Equation:
Substituting and into the slope-intercept form:
Would you like more details on how to find the slope or intercept?
Here are five related questions:
- How do you calculate the slope if given two points?
- What does the y-intercept represent in the equation of a line?
- Can the slope of a line ever be zero or undefined?
- How does the slope affect the direction and steepness of a line?
- How can you find the equation of a line if given a point and the slope?
Tip: When identifying the slope on a graph, always check the vertical (rise) and horizontal (run) distances carefully to ensure correct sign and value!
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Math Problem Analysis
Mathematical Concepts
Algebra
Linear Equations
Slope-Intercept Form
Formulas
y = mx + b (Slope-Intercept Form)
m = (rise)/(run)
Theorems
Slope-Intercept Theorem
Suitable Grade Level
Grades 7-9