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### 11 Cards in this Set

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 T/F - In an equation, it is important that when you do something to one side of the equation you *MUST* do the same exact thing to the other side. True A(n) ________ is a letter that we can use to stand for any number. 1. Equation 2. Remainder 3. Variable 4. Exponent 3. Variable None T/F - In general, when there are two unknowns and more than one equation, there is not enough information to make a unique solution. False T/F - When there are 2 unknowns and 2 equations, there is usually enough information to find a unique solution, if the second equation offers new information. True Y/N - Are the following two equations the same? x + y = 5 3x + 3y = 15 Yes The following steps describe which method of solving an equation: I. Use one of the equations to isolate one of the variables II. Substitute for that variable in the second equation. 1. Substitution 2. Elimination 1. Substitution None What is the following an example of? v + 2w > 21 1. Quotation 2. Equation 3. Equality 4. Inequality 4. Inequality None Inequalities will *never* use which symbol? 1. < 2. > 3. = 4. + 3. = None When you multiply each side of an inequality by -1, you have to do what with the inequality sign? 1. reverse its direction 2. replace with an = sign 3. nothing 1. reverse its direction None T/F - When you take the inverse, or reciprocal, of each side of an inequality, you do not reverse the sign. False T/F - FOIL is a method used to factor polynomials. True