Question 1020491
Pick 5 x values.
Generate 5 y values. 
I'll do 2, you do the rest.
{{{x=0}}}
{{{y=0^2-6=-6}}}
(0,-6)
.
.
{{{x=1}}}
{{{y=1^2-6}}}
{{{y=1-6}}}
{{{y=-5}}}
(1,-5)
Do the same for the remaining three points.
.
.
.
Do the same for this function.
Keep in mind, the value under the square root must be positive!