A painter mixes cans of green and white paint to make the shade needed for painting a bedroom. The table shows the ratios he can use for the color he wants.
Green cans (y) 6 10 16 18
White cans (x) 9 15 24 27
Which is an equation for the constant of proportionality for this relationship?
A
k = 23k\ =\ \frac{2}{3}k =
3
2
B
k = 32k\ =\ \frac{3}{2}k =
2
3
C
k = 910k\ =\ \frac{9}{10}k =
10
9
D
k = 109k\ =\ \frac{10}{9}k =
9
10