Question

Which of the following is the graph of x < 1?

Answer 1

A.

B, C, E and F are automatically ruled out. The number under a square root sign can never be negative.

D is incorrect because 0 is included. When x = 0, the square root of 0 is 0. And of course 0 is less than one.

So A is correct. Any number between 0 and 1 is less than or equal to 1, and not negative (which is impossible)