math
posted by peter .
As part of a new fitness plan, Sabir runs on a treadmill at the same speed for 15 minutes every morning. The table shows the calories he burns over time.
Time (in minutes) 3 , 6, 9, 12,
Number of calories
Burned 15, 30, 45, 60,
Write an equation to represent the relationship between the time Sabir runs and the number of calories he burns. Use x as the independent variable and y as the dependent variable.

Burns 5 calories/minute.
x = 5y 
12