1.what effect does replacing x with xβ4 have on the graph for the function f(x) ? f(x)=|xβ6|+2 the graph is shifted 4 units up. the graph is shifted 4 units down. the graph is shifted 4 units left. the graph is shifted 4 units right. 2.what are the coordinates of the hole in the graph of the function f(x) ? f(x)=x^2+3xβ28/x+7 3.which graph represents the function?