Select all the pairs of points that have lines passing through them with a slope of 2/3.

Question image

Understand the Problem

The question is asking us to determine which pairs of points have lines passing through them with a specific slope of 2/3. To solve this, we will calculate the slope between each given pair of points using the slope formula and see which ones match the specified slope.

Answer

The pairs of points are (0, 0) and (3, 2) and (-2, -2) and (4, 2).
Answer for screen readers

The pairs of points that have lines passing through them with a slope of ( \frac{2}{3} ) are:

  • (0, 0) and (3, 2)
  • (-2, -2) and (4, 2)

Steps to Solve

  1. Slope Formula Introduction

To determine if the pairs of points have a slope of ( \frac{2}{3} ), we'll use the slope formula: $$ m = \frac{y_2 - y_1}{x_2 - x_1} $$ where ( (x_1, y_1) ) and ( (x_2, y_2) ) are the coordinates of the two points.

  1. Calculate Slope for Each Pair

We'll calculate the slope for each pair of points.

Pair 1: (0, 0) and (2, 3)

$$ m = \frac{3 - 0}{2 - 0} = \frac{3}{2} $$

Pair 2: (0, 0) and (3, 2)

$$ m = \frac{2 - 0}{3 - 0} = \frac{2}{3} $$

Pair 3: (1, 5) and (4, 2)

$$ m = \frac{2 - 5}{4 - 1} = \frac{-3}{3} = -1 $$

Pair 4: (-2, -2) and (4, 2)

$$ m = \frac{2 - (-2)}{4 - (-2)} = \frac{4}{6} = \frac{2}{3} $$

Pair 5: (20, 30) and (-20, -30)

$$ m = \frac{-30 - 30}{-20 - 20} = \frac{-60}{-40} = \frac{3}{2} $$

  1. Identify Matching Slopes

Now, we check which slopes equal ( \frac{2}{3} ):

  • Pair 1: ( \frac{3}{2} )
  • Pair 2: ( \frac{2}{3} ) (Match)
  • Pair 3: ( -1 )
  • Pair 4: ( \frac{2}{3} ) (Match)
  • Pair 5: ( \frac{3}{2} )

The pairs of points that have lines passing through them with a slope of ( \frac{2}{3} ) are:

  • (0, 0) and (3, 2)
  • (-2, -2) and (4, 2)

More Information

The slope indicates the steepness of a line. A slope of ( \frac{2}{3} ) means for every 2 units the line rises, it runs 3 units horizontally.

Tips

Common mistakes include:

  • Not applying the slope formula correctly or using the wrong points.
  • Failing to simplify fractions when calculating slopes.

AI-generated content may contain errors. Please verify critical information

Thank you for voting!
Use Quizgecko on...
Browser
Browser