slove question 4 and 6 and 7

Time left 0:16:06 Which of't'he following is not a condition for the existence of a limit of i Select one: i a' the left limit as x-)3 exists. A b' 1(3) exists. Ch lim f (x) exists 1-93' d' the left and Fight limits are eql ion 6 et The graph of y = x-3, x #3 is identical to ered ed out of Select one: O a. y= x - 3 & the point (3, 0) 8 ion O b. (x - 3)2 y = x -3 O c . (x2 - 9) y= x -3 O d. y =x - 3