Math Problem Statement

The slope and y-intercept of a line based on a given graph.

Solution

The image shows a graph with a line crossing through a grid, along with two questions:

  1. The slope of the line (select):
  2. The y-intercept of the graph (select):

Let me analyze the graph to determine the slope and y-intercept.

  • Y-intercept: The y-intercept is the point where the line crosses the y-axis.
  • Slope: The slope can be calculated by finding two points on the line and using the formula:

slope=change in ychange in x=y2y1x2x1\text{slope} = \frac{\text{change in y}}{\text{change in x}} = \frac{y_2 - y_1}{x_2 - x_1}

Let me extract this information.From the graph, we can make the following observations:

  • Y-intercept: The line crosses the y-axis at y=2y = 2.
  • Slope: We can observe two points on the line, for example, at (0,2)(0, 2) and (4,0)(4, 0).

To find the slope, we use the formula:

slope=y2y1x2x1=0240=24=12\text{slope} = \frac{y_2 - y_1}{x_2 - x_1} = \frac{0 - 2}{4 - 0} = \frac{-2}{4} = -\frac{1}{2}

Thus:

  • The slope of the line is 12-\frac{1}{2}.
  • The y-intercept is 22.

Would you like further details, or do you have any other questions?

Here are five related questions to explore:

  1. How do you calculate the slope of a line given any two points?
  2. What is the significance of the y-intercept in a linear equation?
  3. How can the slope of a line affect its appearance on a graph?
  4. What is the formula for a line in slope-intercept form?
  5. How do horizontal and vertical lines differ in terms of slope and intercept?

Tip: When analyzing a graph, always identify at least two clear points on the line to accurately determine the slope.

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Math Problem Analysis

Mathematical Concepts

Linear Algebra
Graphing
Slope
Y-Intercept

Formulas

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

Theorems

Slope Theorem
Intercept Theorem

Suitable Grade Level

Grades 8-10