Math Problem Statement
Hver er jafna línunnar á myndinni hér fyrir neðan?
Solution
To identify the equation of the line shown on the graph, let's analyze its slope and y-intercept:
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Slope: The line is rising from left to right, indicating a positive slope. Observing the angle, it appears relatively steep but not as steep as the equation .
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Y-intercept: The line crosses the y-axis above zero. By inspecting the position, it appears to cross at approximately , aligning well with the y-intercept of equation .
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Confirmation:
- The line has a positive slope, and is the only equation with a slope of 2 and a y-intercept of -1.5, which matches the graph.
Thus, the equation of the line in the graph is:
Would you like further details or have any questions?
Here are some related questions for further practice:
- What would the line look like if the slope were negative?
- How would the line shift if we changed the y-intercept to a positive number?
- What is the effect of doubling the slope on the graph of a line?
- How do we determine the equation of a line from two points on the line?
- How would the equation change if the line were parallel but had a different y-intercept?
Tip: For linear equations, the slope-intercept form quickly shows the slope and y-intercept , making graph analysis straightforward.
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Math Problem Analysis
Mathematical Concepts
Algebra
Linear Equations
Graph Analysis
Formulas
Slope-intercept form y = mx + b
Theorems
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Suitable Grade Level
Grades 8-10