Question

Write a rule for the function represented by the table.

input (x) 0 1 2 3 4 output (y) 3 6 9 12 15 A y=3x B y=3x+3**** C y=5x+1 D y=x+5 my answer was b am I right

Answer 1

B is correct.
Simply substitute any x value from the table for the x in the equation to check your answer.

e.g. y = 3(x =2) + 3 = 9
so, y = 9, when x = 2.
Both these numbers are in the 3rd spot in the table, it is often worth doing this with two x values just to be safe.