Quick Question, when would an inequality like this work: x^2 - 4x >or equal to 0?
...What would I have to do to figure out when this would and would not work?
x^2 - 4x => 0
All values of x that gives an output
equal to or greater than zero is part
of the solution.
Solve: x^2 - 4x = 0
x(x-4) = 0
x = 0
x-4 = 0
x = 4.
Solution: 0 => X => 4.
Graph: x^2 - 4x = 0
(x,y)
(0,0)
(0.5,-1.75)
(1,-3)
(1.5,-3.75)
V(2,-4)
(2.5,-3.75)
(3,-3)
(3.5,-1.75)
(4,0)
An inspection of the graph will verify the solution.