Nikhil paints a wall at a steady rate. The graph shows the area y (m²) still left to paint after x days. What do the two intercepts tell you, and what is his painting rate?

Question

Accepted Answer

Wall 120 m², done in 8 days; 15 m² a day. The y-intercept (0, 120) is the whole wall, 120 m². The x-intercept (8, 0) means nothing is left after 8 days. Rate = 120 ÷ 8 = 15 m² a day, so y = 120 - 15x .

Nikhil paints a wall at a steady rate. The graph shows the area $y (m^{2})$ still left to paint after $x$ days. What do the two intercepts tell you, and what is his painting rate?

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 9 Work and Rate Equations practice

Nikhil paints a wall at a steady rate. The graph shows the area y(m2) still left to paint after x days. What do the two intercepts tell you, and what is his painting rate?

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 9 Work and Rate Equations practice

Nikhil paints a wall at a steady rate. The graph shows the area $y (m^{2})$ still left to paint after $x$ days. What do the two intercepts tell you, and what is his painting rate?