Sam is observing the velocity of a car at different times. after two hours, the velocity of the car is 50 km/h. after six hours, the velocity of the car is 54 km/h.
part a: write an equation in two variables in the standard form that can be used to describe the velocity of the car at different times. show your work and define the variables used.
part b: how can you graph the equation obtained in part a for the first six hours?

The text compares alternating current with direct current. how are they different? a alternating current reverses direction in the electrical wiring. direct current flows in one direction only. b direct current reverses direction in the electrical wiring. alternating current flows in one direction only. c direct current is powered by solar energy. alternating current is powered by electrical energy. d alternating current does not move in the electrical wiring. direct current does move in the electrical wiring.