Answer
$$y=-3x+2.25$$
Work Step by Step
$(x_{1},y_{1}) = (1, -0.75)$ $and$ $(x_{2},y_{2}) = (0.5,0.75)$
$m = \frac{y_{2}-y_{1}}{x_{2}-x_{1}}$
$m = \frac{0.75-(-0.75)}{0.5-1}$
$m = \frac{1.5}{-0.5}$
$m= -3$
y-intercept is
$b=y_{1}-mx_{1}$
$b=-0.75-(-3)(1)$
$b=-0.75 + 3$
$b=2.25$
