Math Problem Statement
Which graph represents the equation y = 3/4x - 3?
Solution
The equation given is , which is in slope-intercept form, , where:
- is the slope
- is the y-intercept.
Steps to analyze:
- Y-Intercept: The line intersects the y-axis at , so the graph must pass through this point.
- Slope: The slope is , meaning for every 4 units moved to the right on the x-axis, the line rises by 3 units on the y-axis.
Now, let's analyze the graphs:
- The top-left graph has a y-intercept of and a positive slope, which appears to match . The line rises by 3 and runs by 4 correctly.
- The other graphs either have incorrect y-intercepts or incorrect slopes.
Thus, the top-left graph is the correct representation of the equation.
Would you like more details on how to graph lines, or do you have other questions?
Related Questions:
- How do you find the slope from two points?
- What does a negative slope look like on a graph?
- How does the slope-intercept form differ from point-slope form?
- How can you check if a point lies on a given line?
- What are other forms of linear equations besides slope-intercept form?
Tip:
When graphing, always plot the y-intercept first, then use the slope to find another point.
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Math Problem Analysis
Mathematical Concepts
Linear Equations
Graphing Lines
Slope-Intercept Form
Formulas
Slope-Intercept Form: y = mx + b
Theorems
Slope-Intercept Theorem
Suitable Grade Level
Grades 8-10