Using the domain values {-1, 0, 4}, how do you find the range values for relation f(x)=3x-8?

1 Answer
Dec 28, 2017

Answer:

Range #f(x) in {color(red)(-11),color(red)(-8),color(red)4}#

Explanation:

Given the domain #{color(magenta)(-1),color(blue)0,color(green)4}#
for the function #f(color(brown)x)=3color(brown)x-8#
the range will be
#color(white)("XXX"){f(color(brown)x=color(magenta)(-1))=3xx(color(magenta)(-1))-8=color(red)(-11)#,
#color(white)("XXX{")f(color(brown)x=color(blue)0)=3xxcolor(blue)0-8=color(red)(-8)#,
#color(white)("XXX{")f(color(brown)x=color(green)4)=3xxcolor(green)4-8=color(red)4#
#color(white)("XXX")}#