A line has vertical intercept 12 and slope -3. What is its horizontal intercept?

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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A line has vertical intercept 12 and slope -3. What is its horizontal intercept? 

**Problem Statement:**

A line has a vertical intercept of 12 and a slope of -3. What is its horizontal intercept?

**Solution Explanation:**

Given:

- Vertical intercept (y-intercept) = 12
- Slope (m) = -3

The equation of the line in slope-intercept form is:

\[ y = mx + c \]

Substituting the given values:

\[ y = -3x + 12 \]

To find the horizontal intercept (x-intercept), set \( y = 0 \):

\[ 0 = -3x + 12 \]

Solve for \( x \):

\[ 3x = 12 \]

\[ x = 4 \]

**Answer:**

The horizontal intercept is at \( (x, y) = (4, 0) \).

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- There are options to "Show My Work (Optional)" and to submit the answer.
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Transcribed Image Text:**Problem Statement:** A line has a vertical intercept of 12 and a slope of -3. What is its horizontal intercept? **Solution Explanation:** Given: - Vertical intercept (y-intercept) = 12 - Slope (m) = -3 The equation of the line in slope-intercept form is: \[ y = mx + c \] Substituting the given values: \[ y = -3x + 12 \] To find the horizontal intercept (x-intercept), set \( y = 0 \): \[ 0 = -3x + 12 \] Solve for \( x \): \[ 3x = 12 \] \[ x = 4 \] **Answer:** The horizontal intercept is at \( (x, y) = (4, 0) \). **Additional Features:** - There are options to "Show My Work (Optional)" and to submit the answer. - Assistance is available through "Need Help?", with options to "Read It" or "Watch It".
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