N mathematics, we often discuss modeling. In geometry, we model the physical world with different shapes. In algebra, we model situations of change and variability with functions.

Where else have you heard the term model? How is that meaning of the word different from or the same as the meaning we use in algebra?

Select the correct answer from each drop-down menu. a system of equations and its solution are given below. system a complete the sentences to explain what steps were followed to obtain the system of equations below. system b to get system b, the equation in system a was replaced by the sum of that equation and times the equation. the solution to system b the same as the solution to system a.]