Subjects algebra

Line Equation 7258Ac

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Question: Determine an equation of the line that passes through the points $(-2, 10)$ and $(6, 4)$. Write your answer in the form $ax + by = c$, where $a$, $b$ and $c$ are integers in their lowest terms.
1. **State the problem:** Find the equation of the line passing through points $(-2, 10)$ and $(6, 4)$ in the form $ax + by = c$ with integers $a$, $b$, and $c$ in lowest terms. 2. **Formula used:** The slope $m$ of a line through points $(x_1, y_1)$ and $(x_2, y_2)$ is given by: $$m = \frac{y_2 - y_1}{x_2 - x_1}$$ The point-slope form of the line is: $$y - y_1 = m(x - x_1)$$ We will then convert this to standard form $ax + by = c$. 3. **Calculate the slope:** $$m = \frac{4 - 10}{6 - (-2)} = \frac{-6}{8} = \frac{-3}{4}$$ 4. **Use point-slope form with point $(-2, 10)$:** $$y - 10 = -\frac{3}{4}(x - (-2))$$ $$y - 10 = -\frac{3}{4}(x + 2)$$ 5. **Distribute the slope:** $$y - 10 = -\frac{3}{4}x - \frac{3}{4} \times 2$$ $$y - 10 = -\frac{3}{4}x - \frac{3}{2}$$ 6. **Add 10 to both sides:** $$y = -\frac{3}{4}x - \frac{3}{2} + 10$$ $$y = -\frac{3}{4}x + \frac{17}{2}$$ 7. **Convert to standard form $ax + by = c$:** Multiply both sides by 4 to clear denominators: $$4y = -3x + 34$$ Rewrite: $$3x + 4y = 34$$ 8. **Check for lowest terms:** Coefficients $3$, $4$, and $34$ have no common divisor other than 1, so this is the simplest form. **Final answer:** $$3x + 4y = 34$$
(-2,10)(6,4)