Based on a website, Ellen knows that 5 slices of pizza have 1,900 calories.

Part A
If she eats 2 slices of pizza, how many calories does she eat?

Part b
If she only eats 190 calories, how much pizza does she eat?

Part c
Create an equation in the form of y=kx to represent the relationship between the number of calories and the number of slices of pizza