Answer:
Constant of proportionality, k = 20
Step-by-step explanation:
number of cups of strawberries in a shortcake recipe is proportional to the number of cups of sugar in the recipe
Let
number of cups of strawberries = x
number of cups of sugar = y
x = ky
Where
k = constant of proportionality
number of cups of strawberries = 5
number of cups of sugar = 1/4
x = ky
5 = k * 1/4
5 = 1/4k
Divide both sides by 1/4
k = 5 ÷ 1/4
= 5 × 4/1
= 20
k = 20
Constant of proportionality, k = 20