Math Problem Statement
What is an equation of the line that passes through the points left parenthesis, minus, 4, comma, 2, right parenthesis(−4,2) and left parenthesis, minus, 8, comma, minus, 2, right parenthesis(−8,−2)?
Solution
To find the equation of the line that passes through the points and , we can use the point-slope form of the equation of a line:
First, we need to calculate the slope using the formula:
Substituting the coordinates as and as :
Now that we have the slope , we can use the point-slope form. Let's use the point for :
Simplifying:
Adding 2 to both sides to get the equation in slope-intercept form :
So, the equation of the line that passes through the points and is:
Would you like more details on any step? Here are some related questions:
- How do you find the slope if you have different coordinates?
- What is the point-slope form of a line equation?
- How can you convert between different forms of linear equations?
- What is the importance of the slope in a linear equation?
- How can you check if a point lies on a given line?
Tip: To verify your result, you can substitute the coordinates of both points into the final equation to ensure they satisfy it.
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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)
Slope-intercept form y = mx + b
Theorems
-
Suitable Grade Level
Grades 8-10
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