Answer:
4
Step-by-step explanation:
Answer:

Step-by-step explanation:
General equation of a parabola that opens up is
, a>0
So equation becomes
which implies option A and option B can never be true for this parabola.
Also this parabola's vertex lies in 3rd quadrant where coordinates of both x and y will be negative.
So, the equation of parabola will be of the form 
Hence, option 4 that is
is correct.
Answer:
a record of all the mail that a mailbox identifies as Junk
Answer:
Slope is -3
y-intercept is -3 and equation is y=-3x-3