nkimidi7y wrote:
When is |x-4| = 4-x?
A. x=4
B. x=0
C. x>4
D. x<=4
E. x< 0
I could answer this question by plugging in some numbers.
But how do i prove this using algebra?
A. x=4
B. x=0
C. x>4
D. x<=4
E. x< 0
I could answer this question by plugging in some numbers.
But how do i prove this using algebra?
.....
picking numbers is best for this sort of problem.
you did well already..... it saves time.....