Math Problem Statement

what if the points are (3, -2) (-1, 6)

Solution

Let's find the equation of the line that passes through the points (3,2)(3, -2) and (1,6)(-1, 6).

Step 1: Calculate the slope mm

The slope mm is calculated using the formula: m=y2y1x2x1m = \frac{y_2 - y_1}{x_2 - x_1}

Substituting the given points (3,2)(3, -2) and (1,6)(-1, 6): m=6(2)13=6+24=84=2m = \frac{6 - (-2)}{-1 - 3} = \frac{6 + 2}{-4} = \frac{8}{-4} = -2

Step 2: Use the slope-intercept form y=mx+by = mx + b

We have the slope m=2m = -2. Now, let's use one of the points to find the y-intercept bb. We can use the point (3,2)(3, -2):

y=mx+by = mx + b 2=2(3)+b-2 = -2(3) + b 2=6+b-2 = -6 + b b=2+6=4b = -2 + 6 = 4

Final Equation

Thus, the equation of the line is: y=2x+4y = -2x + 4

Would you like more details or have any questions?

Here are 5 related questions to explore further:

  1. What is the distance between the points (3,2)(3, -2) and (1,6)(-1, 6)?
  2. How would the equation change if the slope were positive instead?
  3. How can you find the equation using the point-slope form?
  4. What is the significance of the y-intercept in this equation?
  5. Can you determine the x-intercept of this line?

Tip: Always simplify your slope and intercept calculations fully to avoid mistakes in the final equation.

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Math Problem Analysis

Mathematical Concepts

Analytic Geometry
Linear Equations

Formulas

Slope formula
Slope-intercept form

Theorems

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Suitable Grade Level

Grades 7-9