Math Problem Statement

Write an equation for the line parallel to the given line that contains C (3,5); y = (7/8)x + 1

Solution

The given task asks to write an equation of a line parallel to y=78x+1y = \frac{7}{8}x + 1 that passes through the point C(3,5)C(3,5).

To solve this:

  1. Since the line is parallel to y=78x+1y = \frac{7}{8}x + 1, it will have the same slope. The slope of this line is 78\frac{7}{8}.

  2. The general equation for a line in slope-intercept form is: y=mx+by = mx + b where mm is the slope and bb is the y-intercept.

  3. To find the equation of the new line passing through C(3,5)C(3,5), we use the point-slope form of a line: yy1=m(xx1)y - y_1 = m(x - x_1) where (x1,y1)=(3,5)(x_1, y_1) = (3, 5) and m=78m = \frac{7}{8}. Substituting the values: y5=78(x3)y - 5 = \frac{7}{8}(x - 3)

  4. Simplify the equation: y5=78x218y - 5 = \frac{7}{8}x - \frac{21}{8} y=78x218+5y = \frac{7}{8}x - \frac{21}{8} + 5 y=78x218+408y = \frac{7}{8}x - \frac{21}{8} + \frac{40}{8} y=78x+198y = \frac{7}{8}x + \frac{19}{8}

Thus, the equation of the line parallel to y=78x+1y = \frac{7}{8}x + 1 that passes through C(3,5)C(3,5) is: y=78x+198y = \frac{7}{8}x + \frac{19}{8}

Would you like any more details or have questions about this?

Here are 5 related questions you might explore:

  1. How do you find the slope of a line given two points?
  2. What are the different forms of linear equations?
  3. How do you convert a line equation from point-slope to slope-intercept form?
  4. What is the significance of the y-intercept in the slope-intercept form?
  5. How would the equation change if the line were perpendicular instead of parallel?

Tip: The slope of parallel lines is always the same, while perpendicular lines have slopes that are negative reciprocals.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Slope-Intercept Form

Formulas

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

Theorems

Parallel Line Theorem

Suitable Grade Level

Grades 8-10