When the stress on the edge overcomes the friction, there is an earthquake that releases energy in waves that travel through the earth's crust and cause the shaking that we feel. In California there are two plates - the Pacific Plate and the North American Plate.
Answer is c. (2,4) Reason (without seeing the graph) With the same x value and a different y value the line will be straight up and down (vertical line) never crossing the y axis
