# Question #d7dcb

Feb 21, 2017

see explanation.

#### Explanation:

$\text{Using point-slope equation}$

$\Rightarrow y - {y}_{1} = m \left(x - {x}_{1}\right)$

$\text{here } \left({x}_{1} , {y}_{1}\right) = \left(- 1 , 3\right)$

$\Rightarrow y - 3 = m \left(x \textcolor{red}{- \left(- 1\right)}\right)$

$\Rightarrow y - 3 = m \left(x + 1\right)$

$\textcolor{b l u e}{\text{Note}}$ in this case the x-coordinate - 1 is being subtracted thus overall +