2x + 3y = 18
2x - 3y = 20
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They are the simplest form of relationship between two variables. Non-linear equations are often converted - by transforming variables - to linear equations.
william roman
simultaneous equations
A.infinitely manyB.oneD.zero
It is a linear expression in two variables. As an expression it cannot be solved. Furthermore, to solve equations in two variables you need at least two linear equations.