Math Problem Statement
Solution
The image shows a graph of a linear equation. The task appears to involve identifying the equation of the line from the graph and filling out other details like growth, starting value, and direction based on the provided graph.
Step-by-step solution:
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Growth (slope):
- The slope (growth) is the ratio of the rise over the run between two points on the line.
- Choose two points on the line. For example, one point seems to be (0, 4), and another might be (2, 2).
- Slope = (Change in y) / (Change in x) = (4 - 2) / (0 - 2) = -1.
Thus, the growth (slope) is -1.
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Starting value (y-intercept):
- The y-intercept is where the line crosses the y-axis.
- From the graph, the line crosses the y-axis at 4.
So, the starting value is 4.
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Equation:
- Using the slope-intercept form of a line equation, , where is the slope and is the y-intercept: The equation of the line is y = -x + 4.
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Direction:
- The line slopes downward from left to right, indicating a negative direction.
Let me know if you need further details on this or have any questions!
Additional questions to explore:
- What does the negative slope indicate about the relationship between the variables?
- How would the equation change if the line had a positive slope?
- Can you explain how to calculate the slope using two arbitrary points on the line?
- How can we verify that the y-intercept is accurate by looking at the graph?
- What happens to the line if the y-intercept changes?
Tip:
When identifying the slope from a graph, always ensure the points you choose are easy to read and properly align with grid lines to avoid calculation errors.
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Math Problem Analysis
Mathematical Concepts
Algebra
Linear Equations
Graph Interpretation
Formulas
Slope formula: (y2 - y1) / (x2 - x1)
Slope-intercept form: y = mx + b
Theorems
Concept of slope and intercept in linear equations
Suitable Grade Level
Grades 7-9