The system of equations is graphed on the coordinate plane. Y=−x−2y=3x+2 enter the coordinates of the solution to the system of equations in the boxes.

Afish fossil is found in a rock. a foot bone and tooth are found in an older layer of the same rock. what can scientists learn from the rock? a) the area changed from land to water. b) the area changed from water to land. c) the area has always been land. d) the area was once an ocean.