Math Problem Statement

What is the slope of a line that is parallel to the line y = 3/4x + 2? What is the slope of a line that is perpendicular to the line y = -1/2x + 5?

Solution

Let's solve each question.

Question 3

We need to find the slope of a line that is parallel to the line given by the equation: y=34x+2y = \frac{3}{4}x + 2 In the slope-intercept form y=mx+by = mx + b, mm represents the slope. Here, the slope mm is 34\frac{3}{4}.

For two lines to be parallel, they must have the same slope. Thus, the slope of the line parallel to this one is also 34\frac{3}{4}.

Answer for Question 3: 34\frac{3}{4}

Question 4

We need to find the slope of a line that is perpendicular to the line given by: y=12x+5y = -\frac{1}{2}x + 5 In this equation, the slope mm is 12-\frac{1}{2}.

For two lines to be perpendicular, the slopes must be negative reciprocals of each other. The negative reciprocal of 12-\frac{1}{2} is 22 (since 12×2=1-\frac{1}{2} \times 2 = -1).

Answer for Question 4: 22


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Related Questions

  1. How do you determine the slope of a line given two points?
  2. What are the characteristics of perpendicular lines in coordinate geometry?
  3. How can we identify if two lines are parallel just by looking at their equations?
  4. What is the role of the y-intercept in the slope-intercept form of a line?
  5. How do we find the equation of a line passing through a specific point and parallel to another line?

Tip

For perpendicular lines, always remember that their slopes multiply to 1-1 if they are indeed perpendicular.

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Math Problem Analysis

Mathematical Concepts

Algebra
Slopes of Lines
Parallel and Perpendicular Lines

Formulas

Slope of a line in y = mx + b form
Negative reciprocal for perpendicular lines

Theorems

Parallel Lines have the same slope
Perpendicular Lines have slopes that are negative reciprocals

Suitable Grade Level

Grades 8-10