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Most linear equations are functions (that is, for every value of x, there is only one corresponding value of y). When you assign a value to the independent variable, x, you can compute the value of the dependent variable, y. You can then plot the points named by each (x,y) pair on a coordinate grid.
Learning to solve conditional equations is the primary focus of this chapter. A linear equation in one variable x is an equation that can be written in the. standard form where and are real numbers, with For a. review of solving one- and two-step linear equations, see Appendix D.