Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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Transcribed Image Text:**Question:**
Find an equation of the line in standard form with an x-intercept of 2 and a y-intercept of 4.
**Explanation:**
To find the equation of a line in standard form, given the x-intercept and y-intercept:
1. **Identify the intercepts**:
- The x-intercept is the point (2, 0).
- The y-intercept is the point (0, 4).
2. **Use the intercepts to write the equation**:
- A line's equation in standard form is \( Ax + By = C \).
- Use the intercepts to derive the equation:
- Plug x = 2 into the equation and y = 0, which gives \( 2A = C \).
- Plug x = 0 into the equation and y = 4, which gives \( 4B = C \).
3. **Solve for coefficients A, B, and C**:
- From these equations, solve for values that will satisfy both equations, typically \( A = -2 \), \( B = -1 \), and \( C = -4 \). The exact form may vary.
4. **Equation**:
- Substitute back into the equation to verify: \(-2x - y = -4\).
This complex technique of using intercepts and solving equations helps in understanding and formulating the equation of a line in standard form.
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