Use the slope and two points to write linear function rule for the graph.

Y=mx+b       y=2x-6
Slope=Rise/Run   So slope=2/1 (We know it's positive because of the direction of the line)
y-intercept=-6

It has a slope of 1 nd a y intercept of -2

Well in order to lose a pound you would have to burn 1,500 calories. the more calories you burn the more weight you lose. in order to lose 2 pounds you would have to run 4 hours and 28 minutes.