1. the tables below show the values of y corresponding to different values of x: table a x 3 2 1 y 1 0 0 table b x 3 5 4 y −2 1 1 which statement is true for the tables? both table a and table b represent functions. both table a and table b do not represent functions. table a does not represent a function, but table b represents a function. table a represents a function, but table b does not represent a function. 2. which of the following statements best describes the effect of replacing the graph of f(x) with the graph of f(x) + 4? the graph shifts 4 units up. the graph shifts 4 units down. the graph shifts 4 units left. the graph shifts 4 units right.