Question

What is the slope of the line passing through the points (1, –5) and (4, 1)?

A. 2


B. -4/5


C. 5/4


D. -2

Answer 1

\[\frac{ y_2 - y_1 }{ x_2 - x_1 } = \frac{ 1 - (-5) }{ 4 - 1 } = \frac{ 6 }{ 3 } = 2\]

Answer 2

there various formulas for the slope which all mean the same thing:
\[\frac{ rise }{ run } = \frac{ y_2 - y_1 }{ x_2 - x_1 } = \frac{ \Delta y }{ \Delta x }\]

Answer 3

you can user either one of them to find the slope

Answer 4

*use