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.
The new 385 area code will cover the same geographic area as the existing 801 area code. In general, the introduction of the 385 area code will affect residents in the following counties: Davis, Morgan, Salt Lake, Weber, and Utah. The following questions and answers will help clarify the impact of deploying the new 385 area code: