Pregunta
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ind the equation (in terms of ) of the line through the points and

Ask by Murphy Watkins. in the United States
Mar 25,2025

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The equation of the line is .

Solución

To find the equation of the line through the points and , we will follow these steps:
  1. Calculate the slope (m) of the line using the formula:
    where and .
  2. Use the point-slope form of the equation of a line:
    We can choose either of the two points for .
  3. Rearrange the equation to the slope-intercept form or standard form .
Let’s start by calculating the slope .
Calculate the value by following steps:
  • step0: Calculate:
  • step1: Remove the parentheses:
  • step2: Remove the parentheses:
  • step3: Subtract the numbers:
  • step4: Add the numbers:
  • step5: Reduce the numbers:
  • step6: Calculate:

    The slope of the line is .
Now, we can use the point-slope form of the equation with one of the points, say :
This simplifies to:
Next, let’s rearrange this equation to find the equation in terms of .
Solve the equation by following steps:
  • step0: Solve for :
  • step1: Rewrite the expression:
  • step2: Move the constant to the right side:
  • step3: Add the numbers:

    The equation of the line in terms of is:
This is the slope-intercept form of the equation of the line that passes through the points and .

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Bonus Knowledge

To find the equation of the line through the points and , we first need to find the slope ( ) using the formula:
Next, we can use the point-slope form of the equation of a line, which is given by . Using the point :
Simplifying this gives:
So, the equation of the line in terms of is:
Now, this line will help convey many stories in the realm of coordinate geometry! Let’s explore how this kind of math can impact our real-world knowledge and problem-solving skills.
The world around us often operates through linear relationships—like budgeting your monthly expenses based on your income. By understanding how to find equations of lines, you can predict trends and make informed decisions quickly, such as how much you can save each month!
Also, remember that when calculating the slope, it’s easy to confuse which points to assign as , , and , . To prevent mistakes, always double-check the order of the points and ensure proper subtraction—mixing them up can lead to incorrect slopes and ultimately the wrong line equation!

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