A way to solve a linear system algebraically is to use the substitution method. The substitution method functions by substituting the one y-value with the other. We're going to explain this by using an example. We can substitute y in the second equation with the first equation since y = y.
Area code 970 is an area code serving most of the western and northern parts of Colorado.It covers Aspen, Vail, Durango, Grand Junction, Fort Collins, and Estes Park.rea code 970 is an area code serving most of the western and northern parts of Colorado.
Indiana counties that in whole or in part use 812 and 930. Area codes 812 and 930 serve the southern third of the state of Indiana. The area codes cover Evansville and most of its suburbs, the northern suburbs of Louisville and the northwestern suburbs of Cincinnati.Other cities in the area code are Bedford, Bloomington, Columbus, Greensburg, Jasper, Princeton, Seymour, Terre Haute, and Vincennes.he main area code, 812, was one of the original area codes introduced in 1947.