Math Problem Statement

Find the slope of the line if it exists, based on the graph.

Solution

To find the slope of the line from the graph, we can use the formula for slope between two points on the line:

slope=y2y1x2x1\text{slope} = \frac{y_2 - y_1}{x_2 - x_1}

From the graph, the two red points have coordinates approximately at (4,6)(-4, 6) and (4,2)(4, 2).

Using these points:

  • (x1,y1)=(4,6)(x_1, y_1) = (-4, 6)
  • (x2,y2)=(4,2)(x_2, y_2) = (4, 2)

Now, applying the formula for slope:

slope=264(4)=44+4=48=12\text{slope} = \frac{2 - 6}{4 - (-4)} = \frac{-4}{4 + 4} = \frac{-4}{8} = -\frac{1}{2}

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

Let me know if you would like further clarification or details.

Here are five questions related to this topic:

  1. How do you determine the slope of a horizontal line?
  2. What does a negative slope indicate about the direction of the line?
  3. How would the slope change if the two points were swapped?
  4. Can the slope of a vertical line be defined? Why or why not?
  5. How can you find the slope from the equation of a line in slope-intercept form?

Tip: The greater the absolute value of the slope, the steeper the line!

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Coordinate Geometry

Formulas

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

Theorems

Slope of a Line

Suitable Grade Level

Grades 7-9