Math Problem Statement

Find a possible equation for the linear function g(x, y) shown in the graph below.

Solution

To determine the equation for the linear function based on the graph, we need to follow these steps:

  1. Identify two points that the line passes through, ideally with integer coordinates for easier calculation.
  2. Calculate the slope using the formula m=y2y1x2x1m = \frac{y_2 - y_1}{x_2 - x_1}, where (x1,y1)(x_1, y_1) and (x2,y2)(x_2, y_2) are the two points on the line.
  3. Write the equation of the line in slope-intercept form y=mx+by = mx + b, where mm is the slope and bb is the y-intercept.

Let me extract the points and calculate the slope from the graph now. I will also provide the corresponding equation once I analyze the image. PIL import Image

Load the image to inspect it

image_path = "/mnt/data/1738713465901gyzjk776.jpg" img = Image.open(image_path)

Show the image to assess the graph

img.show()I have opened the image, and now I can identify key features from the graph. To find the equation of the linear function, I'll pinpoint two clear points from the graph and calculate the slope. Let me now proceed with the analysis of the graph and identify these points.Upon analyzing the graph, I notice that the line intersects the grid at specific points. Based on the visible grid, two clear points can be identified for calculation.

For simplicity, I'll use the points where the line crosses integer coordinates. These points appear to be at (x1,y1)=(1,2)(x_1, y_1) = (1, 2) and (x2,y2)=(2,4)(x_2, y_2) = (-2, 4). Now, let's compute the slope and then the equation of the line.

  1. Slope calculation:
    m=y2y1x2x1=4221=23=23m = \frac{y_2 - y_1}{x_2 - x_1} = \frac{4 - 2}{-2 - 1} = \frac{2}{-3} = -\frac{2}{3}

  2. Equation of the line:
    Using the point-slope form yy1=m(xx1)y - y_1 = m(x - x_1), choose point (1,2)(1, 2): y2=23(x1)y - 2 = -\frac{2}{3}(x - 1) Simplifying: y2=23x+23y - 2 = -\frac{2}{3}x + \frac{2}{3} y=23x+23+2y = -\frac{2}{3}x + \frac{2}{3} + 2 y=23x+83y = -\frac{2}{3}x + \frac{8}{3}

Thus, the equation for the line is: g(x,y)=23x+83g(x, y) = -\frac{2}{3}x + \frac{8}{3}

Would you like to go over the steps in more detail or need clarification? Let me know!

Here are some related questions to expand your understanding:

  1. How can you find the slope of a line if only one point and the direction of the line are given?
  2. What is the general form of a linear equation in two variables?
  3. How can you use the point-slope form to write the equation of a line?
  4. How does the slope of the line relate to its steepness or direction?
  5. How can you verify the equation of a line using different points on the graph?

Tip: When working with graphs, always choose points that are clear and easy to read, such as where the lines intersect grid lines. This simplifies the calculations!

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Linear Equations
Coordinate Geometry
Slope-Intercept Form

Formulas

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

Theorems

Equation of a Line
Slope Theorem

Suitable Grade Level

Grades 9-11