Math Problem Statement
y=4x+2 y=−14x+5 y=4x+9 y+4=−14(x−3) y=−4x+6 y−4=4(x+3) y=14x+8 y=−14x+9 The equation of line A is y=4x−3 .
Sort the following equations of lines as parallel or perpendicular to line A . Not all equations will be used.
Parallel to Line A Perpendicular to Line A
Solution
To determine which lines are parallel or perpendicular to line A, we need to compare their slopes.
Line A equation:
- The slope of line A is 4.
For parallel lines:
- Lines with the same slope as line A (i.e., slope = 4) are parallel.
For perpendicular lines:
- Lines whose slopes are the negative reciprocal of the slope of line A (i.e., slope = -1/4) are perpendicular.
Now, let's identify the slope of each equation:
-
- Slope = 4
Parallel to line A
- Slope = 4
-
- Slope = -14
Neither parallel nor perpendicular
- Slope = -14
-
- Slope = 4
Parallel to line A
- Slope = 4
-
- Rewrite as:
- Slope = -14
Neither parallel nor perpendicular
-
- Slope = -4
Neither parallel nor perpendicular
- Slope = -4
-
- Rewrite as:
- Slope = 4
Parallel to line A
-
- Slope = 14
Neither parallel nor perpendicular
- Slope = 14
-
- Slope = -14
Neither parallel nor perpendicular
- Slope = -14
Summary:
Parallel to Line A:
Perpendicular to Line A:
- None of the equations have a slope of -1/4, so no perpendicular lines.
Would you like more details or have any questions?
Here are five related questions to expand on this topic:
- How do you determine the slope of a line from an equation?
- Can two lines with different y-intercepts be parallel?
- What is the geometric relationship between parallel and perpendicular lines?
- How can we transform a given equation into slope-intercept form ?
- What are other methods to check if two lines are perpendicular?
Tip: Always rewrite equations into slope-intercept form to easily identify the slope.
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Math Problem Analysis
Mathematical Concepts
Algebra
Linear Equations
Slopes
Parallel and Perpendicular Lines
Formulas
Slope-intercept form y = mx + b
Condition for parallel lines: Same slope
Condition for perpendicular lines: Slopes are negative reciprocals
Theorems
Parallel Line Theorem
Perpendicular Line Theorem
Suitable Grade Level
Grades 8-10
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