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.
Area code 901 serves Memphis, Tennessee, and most of its inner-ring suburbs. Geographically speaking, it is the smallest area code in the state.n September 17, 2001, area code 731 was assigned to most of the old 901 territory outside of the immediate Memphis area. Currently, area code 901 serves only Shelby and Tipton counties and portions of Fayette, Lauderdale and Hardeman counties âroughly coinciding with the inner ring of the Memphis area.