The formula f= 52 x 0.00256 can be used to calculate the amount force f (pounds
per square foot) exerted by wind at a
given speed s in miles per hour. To the
nearest tenth, calculate the force exerted
by 40 mph winds.

the train arrives at 20: 27 hope i

x:       y:  

-1         4

0         4

1         6

2         18

3         20  

parallel lines have the same slope. so if the green line has a slope of -4, the slope of the red line is also -4.