Table of contents
- 0. Review of Algebra4h 16m
- 1. Equations & Inequalities3h 18m
- 2. Graphs of Equations43m
- 3. Functions2h 17m
- 4. Polynomial Functions1h 44m
- 5. Rational Functions1h 23m
- 6. Exponential & Logarithmic Functions2h 28m
- 7. Systems of Equations & Matrices4h 6m
- 8. Conic Sections2h 23m
- 9. Sequences, Series, & Induction1h 19m
- 10. Combinatorics & Probability1h 45m
2. Graphs of Equations
Lines
2:46 minutes
Problem 65
Textbook Question
Textbook QuestionFor each line described, write an equation in(a)slope-intercept form, if possible, and(b)standard form. through (2, -10), perpendicular to a line with undefined slope.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Slope-Intercept Form
The slope-intercept form of a linear equation is expressed as y = mx + b, where m represents the slope of the line and b is the y-intercept. This form is particularly useful for quickly identifying the slope and y-intercept, making it easier to graph the line. In the context of the given question, converting the equation to this form will help visualize the line's position relative to the point (2, -10).
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Slope-Intercept Form
Standard Form
The standard form of a linear equation is written as Ax + By = C, where A, B, and C are integers, and A should be non-negative. This form is beneficial for solving systems of equations and understanding the relationship between the coefficients and the line's characteristics. In this question, converting the slope-intercept form to standard form will provide an alternative representation of the same line.
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Standard Form of Polynomials
Perpendicular Lines
Two lines are perpendicular if the product of their slopes is -1. A line with an undefined slope is vertical, meaning its slope is infinite. Therefore, a line that is perpendicular to a vertical line must be horizontal, which has a slope of 0. Understanding this relationship is crucial for determining the correct slope for the line that passes through the point (2, -10) in the given problem.
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Parallel & Perpendicular Lines
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