Question x-y-1-
3.1 Ratios, Rates, and Proportional Relationships - Direct/inverse proportionality
0:00
| x | y |
| 1 | 4 |
| 3 | 12 |
| 5 | 20 |
| 40 | k |
In the table above, the ratio of y to x for each ordered pair is constant. What is the value of k ?
A.
28
B.
36
C.
80
D.
160