domain is the set of numbers that you can input into the function
the range is the set of numbers that the function outputs from the inputs from the domain
domain={-1,0,1,2,3}
so just subsitute those values for x
f(-1)=4(-1)-1
f(-1)=-4-1
f(-1)=-5
one is -5
Range={-5 and more later}
f(0)=4(0)-1
f(0)=0-1
f(0)=-1
Range={-5,-1 and more later}
f(1)=4(1)-1
f(1)=4-1
f(1)=3
Range={-5,-1,3 and more}
f(2)=4(2)-1
f(2)=8-1
f(2)=7
Range={-5,-1,3,7 and one more}
f(3)=4(3)-1
f(3)=12-1
f(3)=11
Range={-5,-1,3,7,11}
the range is Range={-5,-1,3,7,11}
