How do you evaluate the function #f(x)=absx-5# for f(-6)?
1 Answer
Jan 15, 2017
Explanation:
The
#color(blue)"absolute value"# is always positive. This is because it is a measure of how far a value is from zero.
#rArr|-4|=|4|=4# since both - 4 and 4 are 4 units from zero.
#f(x)=|x|-5#
#rArrf(color(red)(-6))=|color(red)(-6)|-5#
#=6-5=1#
