The equation y = 14x represents the number of pages Printer A can print over time, where y is the number of pages and x is time in minutes. The table shows the number of pages Printer B can print over time.

How many pages does each printer print per minute, and which printer prints at a faster rate?

Printer A: pages per minute

Printer B: pages per minute

The printer that prints at a faster rate is Printer . (Type A for Printer A or B for Printer B)

Printer B
Time (min) 3 5 8 12
Pages printed 48 80 128 192
@Directrix

Question

The equation y = 14x represents the number of pages Printer A can print over time, where y is the number of pages and x is time in minutes. The table shows the number of pages Printer B can print over time.
 
How many pages does each printer print per minute, and which printer prints at a faster rate?
 
Printer A:   pages per minute
 
Printer B:   pages per minute
 
The printer that prints at a faster rate is Printer   . (Type A for Printer A or B for Printer B)
 
Printer B
Time (min)	3	5	8	12
Pages printed	48	80	128	192
 @Directrix

directrix · Answer

Printer A comes with an equation;  y = 14x

If x = 1, then y = 14. Think of that as 14 pages per minute.

directrix · Answer

Printer B - you need to find the slope to get the average number of pages per minute.

Note that we assume that both printers are printing at a constant rate.

Use points (3,48) and (5,80) to get the slope: change in y over change in x.