If it is :
[tex]y = f(x) = {x}^{4} [/tex]
_________________________________
[tex]f( - 4) = ({ - 4})^{4} = 256 [/tex]
_________________________________
[tex]f(2) = {2}^{4} = 16 [/tex]
_________________________________
[tex]f(8) = {8}^{4} = 4096 [/tex]
Range = { 16 , 256 , 4096 }
##############################
If it is :
[tex]y = f(x) = 4x[/tex]
_________________________________
[tex]f( - 4) = 4( - 4) = - 16[/tex]
_________________________________
[tex]f(2) = 4(2) = 8[/tex]
_________________________________
[tex]f(8) = 4(8) = 32[/tex]
Range = { -16 , 8 , 32 }
##############################
And we're done.....♥️♥️♥️♥️♥️