Vanessa and Dominic are buying chicken for a barbecue. The table shows prices for different packages of chicken. Vanessa says the constant of proportionality is 4. Dominic says it is .
Who is correct? Explain your reasoning.
A. Vanessa is correct because 6 – 2 = 4.
B. Dominic is correct because is the smallest number.
C. Dominic is correct because the quotient when dividing the values in the top row by the values in the bottom row is always .
D. Vanessa is correct because the quotient when dividing the values in the bottom row by the values in the top row is always 4.