Math Problem Statement
Solution
The graph shows a line passing through the points and .
Steps to find the equation of the line:
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Find the slope (m): The slope of a line passing through two points and is given by: Substituting the points and : So, the slope .
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Use the point-slope form of the equation: The equation of a line with slope through a point is given by: Using the point and the slope :
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Simplify the equation: Adding 3 to both sides:
So, the equation of the line is:
Would you like a detailed breakdown of any step, or have any other questions?
Here are some related questions:
- How would the equation change if the slope were positive?
- What if the line passed through the origin—how would the equation look?
- Can you convert this equation into standard form ?
- What is the y-intercept of this line?
- How would you graph this equation by hand?
Tip: To find the slope easily from a graph, you can count the "rise over run" between two clear points.
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Math Problem Analysis
Mathematical Concepts
Algebra
Linear Equations
Slope-Intercept Form
Formulas
Slope formula: m = (y2 - y1) / (x2 - x1)
Point-slope form: y - y1 = m(x - x1)
Slope-intercept form: y = mx + b
Theorems
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Suitable Grade Level
Grades 8-10