Math Problem Statement

Find the equation of a line that is parallel to the line y equals negative 12 x and contains the point left parenthesis 8 comma negative 2 right parenthesis .

Solution

To find the equation of a line parallel to y=12xy = -12x that passes through the point (8,2)(8, -2), follow these steps:


Step 1: Identify the slope

The given line is y=12xy = -12x, which is in slope-intercept form (y=mx+by = mx + b). Here, the slope (mm) is 12-12.

Since parallel lines have the same slope, the line we are looking for also has a slope of 12-12.


Step 2: Use the point-slope form of a line

The point-slope form of a line is: yy1=m(xx1)y - y_1 = m(x - x_1) where (x1,y1)(x_1, y_1) is a point on the line, and mm is the slope.

Substituting m=12m = -12, x1=8x_1 = 8, and y1=2y_1 = -2, we get: y(2)=12(x8)y - (-2) = -12(x - 8)

Simplify: y+2=12(x8)y + 2 = -12(x - 8)


Step 3: Simplify to slope-intercept form (if needed)

Distribute 12-12: y+2=12x+96y + 2 = -12x + 96

Subtract 2 from both sides: y=12x+94y = -12x + 94


Final Answer:

The equation of the line is: y=12x+94y = -12x + 94


Would you like further explanation or clarification?
Here are some related questions for further practice:

  1. What is the equation of a line perpendicular to y=12xy = -12x and passing through (8,2)(8, -2)?
  2. How do you derive the equation of a line given two points instead of a slope and a point?
  3. Can you verify if the point (10,26)(10, -26) lies on the line y=12x+94y = -12x + 94?
  4. How do you find the x-intercept and y-intercept of the line y=12x+94y = -12x + 94?
  5. What is the slope of a line that is neither parallel nor perpendicular to y=12xy = -12x?

Tip:

To confirm your equation, substitute the given point into your final equation to ensure it satisfies the line!

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Parallel Lines

Formulas

Point-slope form: y - y1 = m(x - x1)
Slope-intercept form: y = mx + b

Theorems

Parallel line theorem: Parallel lines have the same slope

Suitable Grade Level

Grades 8-10