Math Problem Statement

Find the slope of the line graphed below.

Solution

To find the slope of the line in the graph, we need to identify two clear points on the line. Looking at the image, we can see two points that the line passes through:

  • Point 1: (2,1)(-2, -1)
  • Point 2: (0,2)(0, -2)

The formula for the slope mm of a line is:

m=y2y1x2x1m = \frac{y_2 - y_1}{x_2 - x_1}

Substituting the coordinates of the two points:

m=2(1)0(2)=2+10+2=12m = \frac{-2 - (-1)}{0 - (-2)} = \frac{-2 + 1}{0 + 2} = \frac{-1}{2}

Thus, the slope of the line is 12-\frac{1}{2}.

Would you like further details on this or any related questions? Here are some follow-up questions that could expand on this concept:

  1. How do we interpret the meaning of a negative slope in a graph?
  2. How would the equation of the line look given this slope and the y-intercept?
  3. How do you calculate the slope when the points are not integers?
  4. Can you explain how the slope affects the steepness of the line?
  5. What is the relationship between parallel lines and their slopes?

Tip: Always choose points where the line crosses grid intersections for the most accurate calculation of the slope.

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Math Problem Analysis

Mathematical Concepts

Slope of a line
Linear Equations
Coordinate Geometry

Formulas

m = (y2 - y1) / (x2 - x1)

Theorems

Slope formula for a line through two points

Suitable Grade Level

Grades 7-10