Question

can anyone help me sketch the graph f(x)= -(3-2x)^(1/2) and their inverse in same axes?

Answer 1

http://www.wolframalpha.com/input/?i=f%28x%29%3D-%283-2x%29^.5

Answer 2

And the inverse:
http://www.wolframalpha.com/input/?i=x^2%3D3-2y

Answer 3

but why their sketch of x-axis is at 1.5? can u explain to me?

Answer 4

Because if you replace x with 1.5 you get 0. So you have the ordered pair (1.5,0)