Answer
(a) $m=-4$, $b=3$.
(b) decreasing.
(c) see graph.
Work Step by Step
(a) Given $f(x)=-4x+3$, we can find its slope $m=-4$, y-intercept $b=3$.
(b) As the slope is negative, we can determine that the function is decreasing.
(c) Known point $(0,3)$, find another point on the line $((1,-1))$, connect the points, see graph.
