Question

Find the slope of the line that passes through each pair of points

Answer 1

Use the slope formula: $\frac{y2-y1}{x2-x1}$

1. (4, 9), (1, -6)

$\frac{-6-9}{1-4} = \frac{-15}{-3} = 5$

2. (2, 5), (6, 2)

$\frac{2-5}{6-2} = \frac{-3}{4}$

3. (4, 3.5), (-4, 3.5)

$\frac{3.5-3.5}{-4-4} = \frac{0}{-8} =0$

4. (1, -2), (-2, -5)

$\frac{-5-(-2)}{-2-1} =\frac{-3}{-3} = 1$