Answer:
-120 miles
Step-by-step explanation:
A car is traveling at -40 miles per hour. What will their position be after 3 hours?
-40 mph times 3 hours is -120 miles
is in quadrant I, so
, which means
, so
belongs to the same quadrant.
Now,
Since
, it follows that
Since
belongs to the first quadrant, you take the positive root (
for
in quadrant I). Then
is also positive for
in quadrant I, so you take the positive root again. You're left with
The slope is 3 and y-intercept is 4
y=mx+b