Math Problem Statement

find line equation

Find the line equation.

Solution

The image you've provided shows a straight line on a graph. To determine the equation of the line, I will analyze the slope and y-intercept based on the graph. Let's go through the process:

Steps:

  1. Identify two points on the line: It looks like there's a clear point at (6,0)(6, 0) and another one near (1,2)(-1, 2).

  2. Find the slope (m): The slope mm is calculated by the formula: m=y2y1x2x1m = \frac{y_2 - y_1}{x_2 - x_1} Using the points (6,0)(6, 0) and (1,2)(-1, 2): m=026(1)=27m = \frac{0 - 2}{6 - (-1)} = \frac{-2}{7}

  3. Use the point-slope form to find the equation: Now that we know the slope, we can use the point-slope form of a line's equation: yy1=m(xx1)y - y_1 = m(x - x_1) Using the point (6,0)(6, 0) and m=27m = -\frac{2}{7}: y0=27(x6)y - 0 = -\frac{2}{7}(x - 6) Simplifying this equation: y=27x+127y = -\frac{2}{7}x + \frac{12}{7}

Final Equation:

The equation of the line is: y=27x+127y = -\frac{2}{7}x + \frac{12}{7}

Would you like further details or explanations?

Here are 5 related questions you might be interested in:

  1. How do you find the equation of a line given any two points?
  2. How does the slope of a line affect its steepness?
  3. What is the difference between point-slope form and slope-intercept form of a line?
  4. How can you determine if two lines are parallel or perpendicular?
  5. What does the y-intercept of a line represent graphically?

Tip: To find the slope easily from a graph, use the formula ΔyΔx\frac{\Delta y}{\Delta x} by observing the vertical and horizontal changes between two points.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Slope
Y-Intercept

Formulas

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

Theorems

Slope of a line
Point-slope form of a line

Suitable Grade Level

Grades 8-10