Question

Which equation matches this table?

X 12 3 7 8
Y|6|12|18|42| 48
O y = x-6
O y=x+6
O y= 6 x
OY= x + 6

Answer 1

9514 1404 393

Answer:

y = 6x

Explanation:

When x increases by 1 (from 1 to 2), y increases by 6 (from 6 to 12). So, none of the addition equations will work to express this relationship. The appropriate choice is ...

y = 6x

A test for other x-values reveals this explains all of the y-values shown.

Example:

x = 7, y = 6·7 = 42