Math Problem Statement

Write a line parallel to the line 2x + y = 3 and passes through the point (-2, 5).

Solution

The problem in the image asks to write the equation of a line parallel to the line 2x+y=32x + y = 3 and passing through the point (-2, 5).

Steps to solve:

  1. Find the slope of the given line: The given line is 2x+y=32x + y = 3. We can rewrite it in slope-intercept form y=mx+by = mx + b, where mm is the slope.

    y=2x+3y = -2x + 3

    So, the slope of the line is m=2m = -2.

  2. Use the same slope for the parallel line: Lines that are parallel have the same slope. Therefore, the line we need to find will also have a slope of 2-2.

  3. 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 the point the line passes through, and mm is the slope. In this case, the point is (2,5)(-2, 5) and the slope m=2m = -2.

    Substituting the values: y5=2(x+2)y - 5 = -2(x + 2)

  4. Simplify the equation: Expanding and simplifying the equation: y5=2x4y - 5 = -2x - 4 y=2x+1y = -2x + 1

So, the equation of the line parallel to 2x+y=32x + y = 3 and passing through (2,5)(-2, 5) is: y=2x+1y = -2x + 1

Would you like any further details or explanations?


5 Related Questions:

  1. What is the slope of a line perpendicular to 2x+y=32x + y = 3?
  2. How do you convert a line equation from standard form to slope-intercept form?
  3. What is the point-slope form, and when is it used?
  4. How do you write the equation of a line perpendicular to another line?
  5. How do you determine if two lines are parallel or perpendicular?

Tip:

When given a line equation in standard form, always rearrange it into slope-intercept form to easily identify the slope for parallel or perpendicular line problems.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Parallel Lines

Formulas

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

Theorems

Slope of parallel lines is the same

Suitable Grade Level

Grades 8-10