Math Problem Statement

How to find the equation of this line: a line with the slope of 3/2 that passes through (5,7)

Solution

To find the equation of a line, we can use the point-slope form of the equation:

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

Where:

  • mm is the slope of the line,
  • (x1,y1)(x_1, y_1) is a point on the line.

From the information provided:

  • The slope m=32m = \frac{3}{2},
  • The point on the line is (5,7)(5, 7).

Substitute these values into the point-slope form:

y7=32(x5)y - 7 = \frac{3}{2}(x - 5)

Now, simplify the equation to get the slope-intercept form y=mx+by = mx + b.

  1. Distribute the 32\frac{3}{2} on the right-hand side:

y7=32x152y - 7 = \frac{3}{2}x - \frac{15}{2}

  1. Add 7 to both sides to isolate yy:

y=32x152+7y = \frac{3}{2}x - \frac{15}{2} + 7

  1. Convert 7 into a fraction with denominator 2:

7=1427 = \frac{14}{2}

So the equation becomes:

y=32x152+142y = \frac{3}{2}x - \frac{15}{2} + \frac{14}{2}

  1. Combine the constants:

y=32x12y = \frac{3}{2}x - \frac{1}{2}

Thus, the equation of the line is:

y=32x12y = \frac{3}{2}x - \frac{1}{2}

Would you like further details or a more in-depth explanation? Here are some additional questions you might find useful:

  1. How would the equation change if the slope was negative?
  2. What is the general form of the equation of a line?
  3. How can we graph this line based on the equation?
  4. How do we find the x-intercept and y-intercept from the equation?
  5. How do we convert from point-slope form to slope-intercept form?

Tip: When working with fractions in equations, it's often helpful to convert whole numbers to equivalent fractions to keep things consistent.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

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

Point-Slope Theorem
Slope-Intercept Theorem

Suitable Grade Level

Grades 8-10