Question

Addison painted her room. She had 50 square meters to paint, and she painted at a constant rate. After 2 hours of painting, she had 35 square meters left. Let y represent the area (in square meters) left to paint after x hours. Complete the equation for the relationship between the area and number of hours.

Answer 1

She painted 50 square meters in 2 square hours, so her painting rate is 50 square meters / 2 hours = 25 square meters per hour. The equation is

y = 50 - 25x

This equation represents the relationship between the area remaining to be painted (y) and the number of hours elapsed (x).

Explanation: