Math Problem Statement

Write an equation of the line that passes through (3, 2) and is parallel to the line y=-3x+2.

Solution

The equation of a line parallel to another line will have the same slope. The given line is y=3x+2y = -3x + 2, where the slope is 3-3.

For a line parallel to this, we use the point-slope form of the equation of a line:

yy1=m(xx1)y - y_1 = m(x - x_1)

Where:

  • mm is the slope of the line (in this case, 3-3)
  • (x1,y1)(x_1, y_1) is the point the line passes through (in this case, (3,2)(3, 2))

Substituting the values:

y2=3(x3)y - 2 = -3(x - 3)

Now, simplify the equation:

y2=3x+9y - 2 = -3x + 9

y=3x+11y = -3x + 11

So, the equation of the line is:

y=3x+11y = -3x + 11

Would you like more details or have any questions? Here are five related questions to expand your understanding:

  1. How do you find the equation of a line perpendicular to y=3x+2y = -3x + 2?
  2. What is the general form of a line's equation?
  3. How would the equation change if the line passed through another point?
  4. Can you write the equation of a line parallel to y=4x7y = 4x - 7?
  5. What is the significance of the slope in parallel lines?

Tip: Parallel lines always have the same slope, while perpendicular lines have slopes that are negative reciprocals of each other.

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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 lines have the same slope

Suitable Grade Level

Grades 8-10