Math Problem Statement

What is the slope of the line containing (-3, 1) and (1, -2)?

Solution

To find the slope of the line passing through two points (3,1)(-3, 1) and (1,2)(1, -2), we can use the slope formula:

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

Where:

  • (x1,y1)=(3,1)(x_1, y_1) = (-3, 1)
  • (x2,y2)=(1,2)(x_2, y_2) = (1, -2)

Now, applying the values:

m=211(3)=31+3=34m = \frac{-2 - 1}{1 - (-3)} = \frac{-3}{1 + 3} = \frac{-3}{4}

Thus, the slope of the line is 34-\frac{3}{4}, which corresponds to option B.

Would you like any more details on this?

Here are 5 related questions for further practice:

  1. What is the slope of a line passing through points (2,3)(2, 3) and (4,5)(4, 5)?
  2. How do you interpret a positive slope versus a negative slope?
  3. What is the equation of a line with a slope of 3/4-3/4 that passes through the point (1,2)(1, 2)?
  4. How do you calculate the y-intercept from the slope and a point on the line?
  5. What does it mean if the slope of a line is zero?

Tip: The slope of a line represents the rate of change between the yy-values and xx-values—rise over run!

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Math Problem Analysis

Mathematical Concepts

Linear Algebra
Slope of a Line

Formulas

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

Theorems

Slope Formula Theorem

Suitable Grade Level

Grades 8-10