(a) Note: y is not defined for values of x less than `-1`. (Try some in your calculator, like `x = −4`.)

(b) We determine the some x-values and the corresponding y-values and write them in a table:

x -1 0 1 2 3 4 5
y 0 1 1.4 1.7 2 2.2 2.4

(c) We draw our graph as follows.

123456-1123-1xyOpen image in a new page

Graph of `y=sqrt(x+1)`. It's a half-parabola.