Scientists collect data about salmon as the salmon migrate from the ocean and swim up a river.
The scientists record the distance, y, in kilometers, that a salmon travels from the mouth of the river during a specific amount of time, x, in hours. The relationship between x and y is linear, and two data points are shown.
Salmon Distance over Time
Time (hours) Distance (kilometers)
3 28
10 42
Complete the sentence about the data.
When x is 0 hours, y is ______kilometers, and the rate at which the salmon swims upriver is _______ kilometers per hour.