Find the slope of the line passing through the pair of points.
A)m = 5
B)m = 1
C)m = 2
D)m = -1
E)none of these

Question

Find the slope of the line passing through the pair of points. 
A)m = 5 
B)m = 1 
C)m = 2 
D)m = -1 
E)none of these

Quizplus · Accepted Answer

Using the slope formula,
$$m = \frac{y_2-y_1}{x_2-x_1} = \frac{-3-(-7)}{4-(-3)} = \frac{-3+7}{4+3} = \frac{4}{7}.$$ 
Note that $\frac{4}{7}$ is the slope of the line passing through the points $(4, -7)$ and $(-3, -3)$. However, that is not one of the answer choices. Instead, we simplify $\frac{4}{7}$ to $\frac{-4}{-7}$, which is equivalent to $\boxed{	extbf{(D) } m = -1}$.

Find the Slope of the Line Passing Through the Pair