## Elementary Geometry for College Students (6th Edition)

$1/4$
We use the equation for slope: $m = \frac{y_2-y_1}{x_2-x_1}$ $m_1 = \frac{3-1}{11-3}=\frac{1}{4}$ Parallel lines have the same slope, so the slope of the parallel line to AC is 1/4, which is the slope of AC.