Answer:
y=[tex]\frac{0.5}{-2}[/tex]x-1
Step-by-step explanation:
For m: Use Rise over Run; [tex]\frac{.5}{-2}[/tex]. Negative because the slope is negative.
For b: Just enter any point on the line into the equation; -1=[tex]\frac{.5}{-2}[/tex](0)+b -1=0+b -1=b
