What do these points of intersection mean in terms of the system of equations? (6,45) (3,20)

Statement: if two distinct planes intersect, then their intersection is a line. which geometry term does the statement represent? defined term postulate theorem undefined term

Which of the following is best modeled using a linear equation y=ax+b, where a is less than 0?

As a salesperson you get $50/day and $3.60/each sales you make.if you want to make $60 in one day, how many sales would you need need to make ? a 3b 4c 5d 6 show work.