In a relation, the input is the number of people and the output is the number of watches is this relation a function? why or why not

What is the result of the following division?

Polygon abcde is reflected to produce polygon a′b′c′d′e′. what is the equation for the line of reflection?

Afamily has five members. a mom, a dad, two sisters, & a brother. the family lines up single file. what is the probabillity that the mom is at the front of the line