Math Problem Statement

Find an equation for the line passing through the points (-6, -2) and (2, 2) as shown in the graph.

Solution

To find the equation of the line shown in the image, we need to follow these steps:

Step 1: Identify the coordinates of two points on the line.

From the image, the two points appear to be:

  • Point 1: (6,2)(-6, -2)
  • Point 2: (2,2)(2, 2)

Step 2: Calculate the slope of the line.

The slope mm of the line is given by the formula: m=y2y1x2x1m = \frac{y_2 - y_1}{x_2 - x_1} Substituting the coordinates of the two points: m=2(2)2(6)=2+22+6=48=12m = \frac{2 - (-2)}{2 - (-6)} = \frac{2 + 2}{2 + 6} = \frac{4}{8} = \frac{1}{2} So, the slope of the line is 12\frac{1}{2}.

Step 3: Use the point-slope form of the equation of a line.

The point-slope form is given by: yy1=m(xx1)y - y_1 = m(x - x_1) We can use one of the points, say (6,2)(-6, -2), and the slope 12\frac{1}{2}: y(2)=12(x(6))y - (-2) = \frac{1}{2}(x - (-6)) Simplifying: y+2=12(x+6)y + 2 = \frac{1}{2}(x + 6) Distribute the slope: y+2=12x+3y + 2 = \frac{1}{2}x + 3 Subtract 2 from both sides to solve for yy: y=12x+1y = \frac{1}{2}x + 1

Final Answer:

The equation of the line is: y=12x+1y = \frac{1}{2}x + 1

Would you like more details or have any questions about the steps?


Here are 5 related questions to further your understanding:

  1. How do you find the slope if the coordinates are given in fraction form?
  2. What is the general formula for the slope of a line?
  3. Can you derive the equation using a different point on the line?
  4. How does changing the slope affect the line's steepness?
  5. What is the y-intercept of this line, and how do you interpret it?

Tip: Remember that the slope of a line indicates its steepness and direction. A positive slope means the line rises as it moves from left to right, while a negative slope means it falls.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Slope-Intercept Form
Point-Slope Form

Formulas

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

Theorems

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Suitable Grade Level

Grades 8-10