Math Problem Statement

Find the slope of the line graphed below.

Solution

To find the slope of the line shown in the graph, we can use the formula for the slope between two points, 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 any two points on the line.

From the graph, I can identify two clear points:

  1. (2,2)(-2, -2)
  2. (2,4)(2, -4)

Let's calculate the slope:

m=4(2)2(2)=4+22+2=24=12m = \frac{-4 - (-2)}{2 - (-2)} = \frac{-4 + 2}{2 + 2} = \frac{-2}{4} = -\frac{1}{2}

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

Would you like a further breakdown of this solution?

Here are some related questions for practice:

  1. How would the slope change if the line were going upwards instead of downwards?
  2. Can you find the y-intercept of the line using the slope and one of the points?
  3. What does a slope of 12-\frac{1}{2} tell us about the angle of the line relative to the x-axis?
  4. If the line were shifted up by 3 units, what would the new equation of the line be?
  5. How can you tell from the graph that the slope is negative without calculating it?

Tip: The slope tells us the rate of change of yy with respect to xx. A negative slope indicates a decrease in yy as xx increases.

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Math Problem Analysis

Mathematical Concepts

Coordinate Geometry
Slope of a Line

Formulas

Slope formula: m = (y2 - y1) / (x2 - x1)

Theorems

Concept of slope indicating rate of change of y with respect to x

Suitable Grade Level

Grades 6-8