Question

What is the range of f(x) = -x2 + 4, if the domain is {2,0,1}?

Answer 1

please, you have to substitute your x-values in your function f(x), namely:
f(2)=-(2)^2+4=...
and so on for other values of x
please try to complete the calculus

Answer 2

f(2)=0, is it right?

Answer 3

Yes! Thank you so much!

Answer 4

so the first point of the image of f(x) is y=0, now, please find other two points, for example, please evaluate:
f(0)=... and;
f(1)=...

Answer 5

thank you!