Math Problem Statement

Determine the equation of the line passing through (-4, -2) and (-3, 5).

Solution

The image provides two points, (4,2)(-4, -2) and (3,5)(-3, 5), through which we need to determine a line. To find the equation of the line passing through these points, we can follow these steps:

Step 1: Find the slope mm

The formula for the slope between two points (x1,y1)(x_1, y_1) and (x2,y2)(x_2, y_2) is:

m=y2y1x2x1m = \frac{y_2 - y_1}{x_2 - x_1}

Substituting the given points (4,2)(-4, -2) and (3,5)(-3, 5):

m=5(2)3(4)=5+23+4=71=7m = \frac{5 - (-2)}{-3 - (-4)} = \frac{5 + 2}{-3 + 4} = \frac{7}{1} = 7

Step 2: Use point-slope form to find the equation of the line

The point-slope form of a line is given by:

yy1=m(xx1)y - y_1 = m(x - x_1)

Using the slope m=7m = 7 and the point (4,2)(-4, -2):

y(2)=7(x(4))y - (-2) = 7(x - (-4)) y+2=7(x+4)y + 2 = 7(x + 4)

Step 3: Simplify the equation

Distribute and simplify:

y+2=7x+28y + 2 = 7x + 28 y=7x+282y = 7x + 28 - 2 y=7x+26y = 7x + 26

Thus, the equation of the line passing through (4,2)(-4, -2) and (3,5)(-3, 5) is:

y=7x+26y = 7x + 26


Would you like more details on this, or do you have any questions?

Here are 5 related questions for further exploration:

  1. How would the equation change if we used a different point?
  2. Can you find the equation of a line parallel to this one?
  3. What would be the equation of a line perpendicular to this one?
  4. How do we interpret the slope of this line geometrically?
  5. What are the intercepts of the line with the x-axis and y-axis?

Tip: The slope of a line represents how much yy changes for every unit change in xx.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Coordinate Geometry

Formulas

Slope formula: m = (y2 - y1) / (x2 - x1)
Point-slope form: y - y1 = m(x - x1)

Theorems

Equation of a line
Slope-intercept form

Suitable Grade Level

Grades 8-10