Math Problem Statement

Write the equation of the line in fully simplified slope-intercept form.

Solution

To find the equation of the line in slope-intercept form, we need to determine the slope (m) and the y-intercept (b).

Step 1: Identify two points on the line

From the graph:

  • The line appears to pass through the points (6,4)(-6, -4) and (6,3)(6, 3).

Step 2: Calculate the slope (m)

The slope mm is calculated using the formula:

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

Substituting the points (6,4)(-6, -4) and (6,3)(6, 3) into the formula:

m=3(4)6(6)=3+46+6=712m = \frac{3 - (-4)}{6 - (-6)} = \frac{3 + 4}{6 + 6} = \frac{7}{12}

Step 3: Determine the y-intercept (b)

The slope-intercept form is:

y=mx+by = mx + b

We can use one of the points to solve for bb. Let's use the point (6,3)(6, 3):

3=712×6+b3 = \frac{7}{12} \times 6 + b

3=7×612+b=4212+b=3.5+b3 = \frac{7 \times 6}{12} + b = \frac{42}{12} + b = 3.5 + b

b=33.5=0.5b = 3 - 3.5 = -0.5

Step 4: Write the final equation

The equation of the line in slope-intercept form is:

y=712x12y = \frac{7}{12}x - \frac{1}{2}

Would you like further details or have any questions?


Related Questions:

  1. How do you calculate the slope between two points on a graph?
  2. What is the significance of the y-intercept in the slope-intercept form of a line?
  3. How can you determine the equation of a line if you only know its slope and a single point?
  4. What is the difference between the slope-intercept form and the point-slope form of a line?
  5. How do you convert an equation from standard form to slope-intercept form?

Tip: When identifying points on a graph, choose points where the line crosses grid intersections to ensure more accurate calculations.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Slope-Intercept Form

Formulas

Slope formula: m = (y2 - y1) / (x2 - x1)
Slope-intercept form: y = mx + b

Theorems

Slope-Intercept Theorem

Suitable Grade Level

Grades 8-10