Question

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

Answer 1

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

Answer 2

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