Question

1. does a linear function have to have an x value of 0?

2. what is a constant rate?

3. does a linear function need to be all positive, or can it have some negative values?

Answer 1

yes

Explanation:

let me explain more in depth. 1: yes, it's the point where the function crosses the x axis. 2: the absence of acceleration. 3: I think it can be negative