Leena had already typed some pages of a report before she started timing herself, and then typed at a steady rate. The graph shows pages typed y after x hours. Which equation describes the line?

Question

Accepted Answer

y = 15x + 20. At x = 0 , y = 20 (pages already typed). From (0, 20) to (4, 80) the pages rise by 60 in 4 hours, i.e. 15 per hour. So y = 15x + 20 .

Leena had already typed some pages of a report before she started timing herself, and then typed at a steady rate. The graph shows pages typed $y$ after $x$ hours. Which equation describes the line?

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 9 Work and Rate Equations practice