Math Problem Statement

Find the equation of the line which passes through the point (-8, -6) and is parallel to the line 7y - 1 = -2(4 - 2x). Express your answer in slope-intercept form.

Solution

Let's solve the problem step-by-step.

Step 1: Determine the slope of the given line

The given equation of the line is: 7y1=2(42x)7y - 1 = -2(4 - 2x)

First, expand and simplify the equation: 7y1=8+4x7y - 1 = -8 + 4x

Rearrange to get the equation in slope-intercept form (y=mx+by = mx + b): 7y=4x+77y = 4x + 7 y=47x+1y = \frac{4}{7}x + 1

From this equation, the slope (mm) of the given line is 47\frac{4}{7}.

Step 2: Write the equation of the parallel line

Lines that are parallel have the same slope. Thus, the slope of the line that passes through the point (8,6)(-8, -6) is also 47\frac{4}{7}.

Using the point-slope form of a line equation, which 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, we can plug in the values: y+6=47(x+8)y + 6 = \frac{4}{7}(x + 8)

Now simplify this to get the equation in slope-intercept form: y+6=47x+327y + 6 = \frac{4}{7}x + \frac{32}{7} y=47x+3276y = \frac{4}{7}x + \frac{32}{7} - 6 y=47x+327427y = \frac{4}{7}x + \frac{32}{7} - \frac{42}{7} y=47x107y = \frac{4}{7}x - \frac{10}{7}

So, the equation of the line in slope-intercept form is: y=47x107y = \frac{4}{7}x - \frac{10}{7}

This equation represents the line parallel to the given line and passing through the point (8,6)(-8, -6).

Would you like more details on any of these steps or have any other questions?

Here are a few related questions you might find interesting:

  1. How would you find the perpendicular slope to this line?
  2. What would be the equation of a line parallel to the given line but passing through the origin?
  3. How can we determine the y-intercept of a line if we know a point and the slope?
  4. What is the significance of the slope in real-life applications?
  5. Can you find the intersection point between the original line and the y-axis?

Tip: When you need to find a line parallel to a given line, always use the same slope for the new line as the given line's slope.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Linear Equations
Slope-Intercept Form
Parallel Lines

Formulas

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

Theorems

Parallel lines have equal slopes

Suitable Grade Level

Grades 8-10