Given y=x, what is the constant of proportionality?

How do i make someone brainliest? (if you answer me, i might be able to make you brainliest! )

Zoey made 5 1/2 cups of trail mix for a camping trip. she wants to divide the trail mix into 3/4 cup servings. a. ten people are going on the trip. can zoey make enough 3/4 cup servings so that each person gets one serving? b. what size would the servings need to be for everyone to have a serving?

What is the x-intercept and y-intercept of the equation 2x+1. 2o