Question

what's the range of f(x)=-2x-5 for the domain (-2,-1,1,2)

Answer 1

just input the domain to find the range

f(-2)=-2(-2)-5=4-5=-1
f(-1)=-2(-1)-5=2-5=-3
f(1)=-2(1)-5=-2-5=-7
f(2)=-2(2)-5=-4-5=-9

range is [-9,-7,-3,-1]