In that statement of a function, 'a', 'b', and 'c' all represent
plain old ordinary constant numbers.
(0,0) means the origin of the coordinate plane and its when bothe the x and y xoordinates are 0
7(x+4)>0
Distribute 7. (multiply by x and 4)
7x+28>0
Subtract 28 on both sides.
7x>-28
Divide by 7 into both sides.
x>-4
x>-4 is the answer.
I hope this helps!
~kaikers
