Question

Identify which table shows a direct variation.

Two tables. For each table the column headings are x and y. Table 1 has column one values of 1, 2, 3 and column 2 values of 19, 38, 57. Table 2 has column 1 values 5, 6, 7 and column 2 values 48, 72, 84.

A.
Table 1 only

B.
Table 2 only

C.
both tables

D.
neither table

Answer 1

the answer is table 1
proof
19+19=38
38+19=57
or
1*19=19
2*19=38
3*19=57