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A line has slope $\dfrac{-3}{4}$ and passes through the point $(1,-4) \text{.}$ Which equation can you use to find the $y$ -coordinate of the point on the line with the $x$ -coordinate of 6?

$\dfrac{-3}{4}=\dfrac{1-6}{y+4}$
$\dfrac{-3}{4}=\dfrac{y+4}{1-6}$
$\dfrac{-3}{4}=\dfrac{y-6}{-4-1}$
$\dfrac{-3}{4}=\dfrac{y+4}{6-1}$

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