Answer:
Part a), Part b) and Part c) see the explanation
Step-by-step explanation:
we know that
A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form or
In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin
Let
x -----> the amount of vinegar in tablespoons
y ----> the amount of oil in tablespoons
In this problem
The relationship between the variables x and y represent a proportional variation
The constant of proportionality k is equal to the ratio of the recipe
so
substitute
The linear equation is equal to
Explain the meaning of the point (1.1.5)
we have
x=1, y=1.5
In the context of the situation
This means ----->The amount of oil needed is 1 (tablespoon) if the amount of vinegar used is 1.5 (tablespoons) to make the salad dressing according to this recipe.
see the attached figure to better understand the problem
