Question

Write an equation in slope-intercept form of a line that passes through (-1,3) and (-4,5)

Answer 1

$\frac{y_2 - y_1}{x_2 - x_1} = \frac{5 - 3}{-4 - (-1)} = \frac{2}{-4 + 1} = \frac{2}{-3} = -\frac{2}{3} \\\\y - y_1 = m(x - x_1) \\y - 3 = -\frac{2}{3}(x - (-1)) \\y - 3 = -\frac{2}{3}(x + 1) \\y - 3 = -\frac{2}{3}(x) - \frac{2}{3}(1) \\y - 3 = -\frac{2}{3}x - \frac{2}{3} \\y = -\frac{2}{3}x + 2\frac{1}{3}$