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11 Cards in this Set
- Front
- Back
- 3rd side (hint)
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.
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True
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A(n) ________ is a letter that we can use to stand for any number.
1. Equation 2. Remainder 3. Variable 4. Exponent |
3. Variable
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None
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T/F - In general, when there are two unknowns and more than one equation, there is not enough information to make a unique solution.
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False
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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.
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True
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Y/N - Are the following two equations the same? x + y = 5 3x + 3y = 15
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Yes
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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
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None
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What is the following an example of? v + 2w > 21
1. Quotation 2. Equation 3. Equality 4. Inequality |
4. Inequality
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None
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Inequalities will *never* use which symbol?
1. < 2. > 3. = 4. + |
3. =
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None
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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
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None
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T/F - When you take the inverse, or reciprocal, of each side of an inequality, you do not reverse the sign.
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False
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T/F - FOIL is a method used to factor polynomials.
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True
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