Math Problem Statement

What is the equation of the line shown in the graph?

Solution

The graph you've provided shows a straight line on a coordinate plane. To analyze this line, I'll find the equation of the line and provide details based on what we observe. The general equation of a line is y=mx+by = mx + b, where:

  • mm is the slope of the line, which indicates the steepness and direction.
  • bb is the y-intercept, where the line crosses the y-axis.

From the image:

  1. The line crosses the y-axis at y=1y = 1, so the y-intercept b=1b = 1.
  2. To find the slope, mm, we observe two points on the line. From the graph, the line passes through approximately (0,1)(0, 1) and (2,5)(2, 5).

Using these two points, we can calculate the slope mm as: m=y2y1x2x1=5120=42=2m = \frac{y_2 - y_1}{x_2 - x_1} = \frac{5 - 1}{2 - 0} = \frac{4}{2} = 2

Thus, the equation of the line is: y=2x+1y = 2x + 1

Would you like further details on how to graph or analyze this line, or do you have specific questions?

Here are 5 related questions to expand this topic:

  1. How can you find the slope if the line is not easily visible?
  2. What happens to the graph if the slope is negative?
  3. How does changing the y-intercept affect the position of the line?
  4. Can you use this method to find the equation of any straight line?
  5. What is the relationship between parallel and perpendicular lines?

Tip: To graph a line efficiently, find both the y-intercept and one other point, then use the slope to plot the line.

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Math Problem Analysis

Mathematical Concepts

Linear Equations
Coordinate Geometry

Formulas

Slope formula: m = (y2 - y1) / (x2 - x1)
General form of a linear equation: y = mx + b

Theorems

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Suitable Grade Level

Grades 7-9