Question

The following table shows a proportional relationship between mmm and nnn.

mmm nnn
333 212121
555 353535
888 565656

Answer 1

n = 7m

Explanation:

n = k(m)

21 = k(3)

k = 21/3 = 7

n = 7m

Answer 2

n = 7m

Explanation:

find an equation between n and m by dividing n/m

m = 3, n = 21

n/m = 21/3 = 7

n = 7m

check using the other two points

m = 5, n = 35

n/m = 35/5 = 7

n = 7m

m = 8, n = 56

n/m = 56/8 = 7

n = 7m