Question

a pizza restaurant uses the equation: Y=1.5x + 10, where y is the total cost of a pizza, and x is the number of additional toppings. does the equation represents proportional relationship? How do you Know?

Answer 1

It represents a proportional relationship, since it has the same format as the equation of a line.

Explanation:

Equation of a line:

Has the following format:

y = ax + b

It represents a proportional relationship.

In this question:

y = 1.5x + 10

Has the same format of the equation of a line. This means that it represents a proportion relationship.