Question

Paul’s Pizzeria sells a large cheese pizza for $10 and charges $2 for each extra topic ordered. Determine the slope, or constant rate of change, and the y-intercept. relationship between the number of toppings, x, and the total cost of pizza, y.

Answer 1

Explanation:

the $10 are a constant part of the price (no matter how many extra toppings are ordered).

the price varies by $2 per extra topping.

so,

y = 2x + 10

it is a linear relationship.

the slope is 2 ($2 per 1 extra topping) also called constant rate of change.

the y-intercept (the y-value when x = 0) is 10.