What’s the domain of g(x)=x+2/|x+2|

What is the effect on the graph of the parent function f(x) = x when f(x) is replaced with 3f(x)? a) shifts the line 3 units up b) shifts the line 3 units down c) increases the slope of the line by a factor of 3 d) decreases the slope of the line by a factor of 3

What is the y-intercept of the line given by the equation

Can someone me out here and the tell me the greatest common factor