Answer
(refer to the step by step part for the explanation)
$\\\\$The error is that the numerator and the denominator were interchanged. The correct value of the slope is:
$\\\\m=\dfrac{1}{3}$
Work Step by Step
The error is in the numerator and the denominator as they were interchanged.
$\\\\$The correct calculation is:
$\\\\m=\dfrac{-4-(-6)}{0-(-6)}
\\\\m=\dfrac{-4+6}{0+6}
\\\\m=\dfrac{2}{6}
\\\\m=\dfrac{1}{3}$
