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Finding the Equation of a Line Through and
To find the equation of a line containing the points and , apply the four-step two-points procedure and write the result in slope-intercept form. Step — Find the slope. Apply the slope formula: Step — Choose one point. Use , so and . Step — Substitute into the point-slope form : Simplify the left side and distribute on the right: Step — Write in slope-intercept form by subtracting from both sides: The equation of the line is . This example illustrates how subtracting a negative coordinate () becomes addition, and how a fractional slope produces fractional terms throughout the calculation.
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Finding the Equation of a Line Through and
Finding the Equation of a Line Through and
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Finding the Equation of a Line Through and
Finding the Equation of a Line Through and
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