Math Problem Statement
Graph the line y = -5x + 8.
Solution
To graph the line given by the equation , let’s go through the steps:
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Identify the slope and y-intercept:
- The equation is in slope-intercept form, , where is the slope and is the y-intercept.
- Here, and .
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Plot the y-intercept:
- The y-intercept is , so place a point at on the y-axis.
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Use the slope to find another point:
- The slope can be interpreted as , meaning that for every 1 unit moved to the right (positive x-direction), we move 5 units down (negative y-direction).
- Starting from , move 1 unit to the right to , then move 5 units down to . Place another point at .
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Draw the line:
- Connect the points and with a straight line, extending it in both directions.
This line represents the equation on the graph.
Would you like further details on graphing lines or the reasoning behind each step?
Here are some related questions you might find helpful:
- How do you graph lines with positive slopes?
- What is the general form of a line, and how is it different from the slope-intercept form?
- How would the graph change if the slope were less steep, like ?
- How do you graph a line given in standard form, such as ?
- What is the effect of changing the y-intercept in a linear equation?
Tip: When working with a slope, remember that a negative slope means the line goes downward from left to right.
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Math Problem Analysis
Mathematical Concepts
Algebra
Graphing Linear Equations
Slope-Intercept Form
Formulas
Slope-intercept form: y = mx + b
Theorems
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Suitable Grade Level
Grades 8-10