Math Problem Statement

Use the given conditions to write an equation for the line in point-slope form and in slope-intercept form. Passing through (-4, -6) and parallel to the line whose equation is y = -2x + 2.

Solution

The problem is asking to find the equation of a line in two forms—point-slope form and slope-intercept form. Here's how to approach this:

Step 1: Understand the slope of the parallel line

The equation of the given line is y=2x+2y = -2x + 2. The slope of this line is m=2m = -2.

Since the new line is parallel to the given line, it will have the same slope: m=2m = -2.

Step 2: Write the equation in point-slope form

The line passes through the point (4,6)(-4, -6). The point-slope form of a line is: yy1=m(xx1)y - y_1 = m(x - x_1) Substitute m=2m = -2, x1=4x_1 = -4, and y1=6y_1 = -6: y(6)=2(x(4))y - (-6) = -2(x - (-4)) Simplify: y+6=2(x+4)y + 6 = -2(x + 4) This is the point-slope form of the line.

Step 3: Convert to slope-intercept form

To convert to slope-intercept form y=mx+by = mx + b, expand and simplify the equation: y+6=2(x+4)y + 6 = -2(x + 4) Distribute 2-2: y+6=2x8y + 6 = -2x - 8 Subtract 6 from both sides: y=2x14y = -2x - 14 This is the slope-intercept form of the line.

Final Answer:

  1. Point-slope form: y+6=2(x+4)y + 6 = -2(x + 4)
  2. Slope-intercept form: y=2x14y = -2x - 14

Would you like more details or have additional questions?


Here are 5 related questions to deepen your understanding:

  1. How do you find the slope of a line if only two points are given?
  2. What changes when a line is perpendicular instead of parallel to a given line?
  3. Can you derive the point-slope form equation of a line passing through (0,0)(0, 0)?
  4. How do you verify if two lines are parallel or perpendicular?
  5. How can slope-intercept form help in graphing a line quickly?

Tip: Always check the slope carefully when dealing with parallel or perpendicular lines—it's key to writing the correct equation!

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Point-Slope Form
Slope-Intercept Form

Formulas

Point-Slope Form: y - y1 = m(x - x1)
Slope-Intercept Form: y = mx + b

Theorems

Parallel lines have equal slopes.

Suitable Grade Level

Grades 8-10