Math Problem Statement
Write an equation for the graph in slope-intercept form, i.e., y = mx + b.
Solution
To find the equation of the given line in slope-intercept form , let's identify the slope and the y-intercept from the graph.
1. Determine the Slope ():
The slope can be calculated using the formula: Let's choose two points from the graph:
- Point 1:
- Point 2:
Now calculate the slope:
2. Find the Y-intercept ():
The y-intercept is the point where the line crosses the y-axis. From the graph, the line crosses the y-axis at . Thus, .
3. Write the Equation:
Using and , the equation of the line is:
Would you like a detailed explanation on any specific part?
Related Questions:
- How do you find the slope when only given two points?
- What are the characteristics of a line when the slope is negative?
- How do you determine the y-intercept if it isn’t clearly visible on a graph?
- What does the slope-intercept form represent geometrically?
- How would the graph change if the slope was positive instead of negative?
Tip:
When finding the slope, always remember to subtract -coordinates and -coordinates in the same order to avoid sign errors.
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Math Problem Analysis
Mathematical Concepts
Algebra
Linear Equations
Slope-Intercept Form
Formulas
Slope formula m = (y2 - y1) / (x2 - x1)
Slope-Intercept Form y = mx + b
Theorems
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Suitable Grade Level
Grades 7-9