The following problem can be modeled with a linear equation. analyze the problem and identify what quantities the variables x and y represent. the information provided in the problem is adequate to determine a point and a slope or two points on the line.
robinson wholesale company paid $1370 for 500 items. later they bought 800 items for $1730. assume that the cost is a linear function of the number of items. write the equation. (let y represent the amount paid and x represent the number of items purchased.)