Math Problem Statement

write the equation of the line that passes through the point (5,7) and is parallel to a line that passes through the points (-2,3) and (2,6)

Solution

To find the equation of the line that passes through the point (5,7)(5,7) and is parallel to a line passing through the points (2,3)(-2,3) and (2,6)(2,6), we can follow these steps:

Step 1: Determine the slope of the given line

First, we need to find the slope of the line passing through the points (2,3)(-2,3) and (2,6)(2,6). The formula for the slope mm between two points (x1,y1)(x_1, y_1) and (x2,y2)(x_2, y_2) is:

m=y2y1x2x1m = \frac{y_2 - y_1}{x_2 - x_1}

Substituting the given points:

m=632(2)=34m = \frac{6 - 3}{2 - (-2)} = \frac{3}{4}

So, the slope of the line is 34\frac{3}{4}.

Step 2: Use the point-slope form to find the equation of the line

Since parallel lines have the same slope, the slope of the line we want to find is also 34\frac{3}{4}. We can use the point-slope form of the equation of a line, which is:

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

Where (x1,y1)(x_1, y_1) is the point (5,7)(5,7) and m=34m = \frac{3}{4}.

Substituting the values:

y7=34(x5)y - 7 = \frac{3}{4}(x - 5)

Step 3: Simplify to the slope-intercept form (optional)

To get the equation in slope-intercept form y=mx+by = mx + b, distribute and simplify:

y7=34x154y - 7 = \frac{3}{4}x - \frac{15}{4}

Add 7 to both sides:

y=34x154+7y = \frac{3}{4}x - \frac{15}{4} + 7

To combine the constant terms, convert 7 to a fraction with a denominator of 4:

y=34x154+284y = \frac{3}{4}x - \frac{15}{4} + \frac{28}{4}

Simplifying further:

y=34x+134y = \frac{3}{4}x + \frac{13}{4}

So, the equation of the line is:

y=34x+134\boxed{y = \frac{3}{4}x + \frac{13}{4}}

Would you like more details or have any questions?

Here are some related questions you might find useful:

  1. How do you find the equation of a line given two points?
  2. What are the properties of parallel and perpendicular lines?
  3. How do you convert an equation from point-slope form to slope-intercept form?
  4. What is the significance of the slope in the equation of a line?
  5. How do you find the intersection of two lines given their equations?

Tip: When working with fractions, converting to a common denominator can help simplify addition or subtraction.

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Math Problem Analysis

Mathematical Concepts

Geometry
Equations of Lines

Formulas

Point-slope form of a line equation
Slope formula

Theorems

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Suitable Grade Level

Grades 9-12