How do you solve #y=1/4x-1# if the domain is #{— 4,— 2,0 ,2 ,4 }#?

1 Answer
Jim G.
Jun 18, 2018

#{-2,-3/2,-1,-1/2,0}#

Explanation:

#"substitute each value of x from the domain into the"#
#"equation for values of y in the domain"#

#x=color(red)(-4):y=1/4xxcolor(red)(-4)-1=-1-1=-2#

#x=color(red)(-2):y=1/4xxcolor(red)(-2)-1=-1/2-1=-3/2#

#x=color(red)(0):y=1/4xxcolor(red)(0)-1=0-1=-1#

#x=color(red)(2):y=1/4xxcolor(red)(2)-1=1/2-1=-1/2#

#x=color(red)(4):y=1/4xx4-1=1-1=0#

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