write a function g whose graph represents a vertical shrink by the factor of 1/2 of the graph f (x)=2x + 6

The snowstorm lasted a total of 9hours it snowed at a rate of 1 inch per hour during the first 2 hours the snow continued for the next 6 hours falling at a rate of 2 inches per hour,and finally reduced to 1 inch per hour for the last hour