The points (80, 20) and (120, 30) form a proportional relationship. What is the slope of the line that passes through this point?

Aline that intersects one of two parallel lines intersects the other also always sometimes never

Barney & noblet customers can choose to purchase a membership for $25 per year members receive 10% off all store purchases 1. how much would a member pay per year if he bought $50 worth of items each year? 2. write a slope-intercept equation that expresses how much a member pays per year using x to represent his purchases per year 3. how much would a member have to spend per year to pay off his membership fee?

What function has a range {yly< 5}? question on picture above^