The correct line here is A.) -2x - 1
In order to find that line, you're going to use the slope and the point given in slope intercept form to find the intercept.
y = mx + b
-9 = -2(4) + b
-9 = -8 + b
-1 = b
Now that we have an answer for the intercept, we can plug it in along with the slope to write the whole equation.
y = -2x - 1
