How would I graph the function $$f(x)=\sqrt{x-1}-1$$ ?
The directions say to start with the leftmost point and graph three additional ones. Help?

Question

How would I graph the function $$f(x)=\sqrt{x-1}-1$$ ? 
The directions say to start with the leftmost point and graph three additional ones. Help?

jim_thompson5910 · Answer

x = 1 is the smallest whole number you can plug in, so let's start there

jim_thompson5910 · Answer

$$f(x)=\sqrt{x-1}-1$$

$$f(1)=\sqrt{1-1}-1$$

$$f(1)=\sqrt{0}-1$$

$$f(1)=0-1$$

$$f(1)=-1$$

So the point (1, -1) is on the graph

jim_thompson5910 · Answer

Let's now plug in x = 2

$$f(x)=\sqrt{x-1}-1$$ 

$$f(2)=\sqrt{2-1}-1$$ 

$$f(2)=\sqrt{1}-1$$ 

$$f(2)=1-1$$ 

$$f(2)=0$$ 

So the point (2, 0) is on the graph

jim_thompson5910 · Answer

I'll let you do the other two points