otseproportsionaalsed

Otseproportsionaalsed describes a mathematical relationship between two quantities where their ratio remains constant. This means that as one quantity increases, the other quantity increases proportionally, and as one quantity decreases, the other decreases proportionally. If y is directly proportional to x, this can be expressed as y = kx, where k is a non-zero constant known as the constant of proportionality. This constant can be found by dividing any corresponding pair of y and x values. For example, if the number of hours worked is directly proportional to the amount of money earned, and someone earns $100 for 5 hours of work, the constant of proportionality (the hourly wage) is $100 / 5 hours = $20 per hour. Therefore, for 10 hours of work, they would earn $20/hour * 10 hours = $200. Graphically, a direct proportion is represented by a straight line passing through the origin (0,0). Common real-world examples include the relationship between the distance traveled at a constant speed and the time taken, or the amount of fuel consumed by a vehicle and the distance it travels, assuming consistent fuel efficiency.