Answer
$y=-3x+16$
Work Step by Step
Given: Point $(3,7) \rightarrow (x_1,y_1)$
and slope $m=-3$
Using point-slope form:
$y-y_1=m(x-x_1)$
Plug in the given values:
$y-7=-3(x-3)$
$y-7=-3x+9$
$y=-3x+16$
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