What rule changes the input to output numbers?

Input

1

2

3

4

Output

-6

-4

-2

0

A. 2x-10

B. 2x - 8

C. 3x-9

D. 3x-6

The correct answer is B (2x - 8)

Plug in each individual answer to where x goes and the solve.

Check:

2 (1) - 8=-6

2 (2) - 8=-4

2 (3) - 8=-2

2 (4) - 8=0

Each pair of numbers in the table is related by the same function rule. That rule is: multiple each input number value by 3 to find each output number value. You can use a rule like this to find other values for this function, too