Math Help Plz

Question

1. Find the domain and range for f(x)=√2-x.

Given the graph below, determine if the relation is a function, Explain your answer.

a. If the relation is a function, state the domain and range in interval and in set-builder notation.

Answer 1

You want to set the argument of the square-root greater than or equal to zero.  This will allow you to create an inequality to solve for x from.  The solution of the inequality is your domain.