Please help me fast I am confused!!! ( Find the y-intercept in the following equation)

How much orange juice do you need to make 2 servings of lemony orange slush?

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.

The table showed price paid per concert ticket on a popular online auction site. what was the average price paid per ticket