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Algebra CST Prep
words to know for the algebra CSTs
24
Mathematics
9th Grade
03/10/2011

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Term
linear equation
Definition
an equation of the form y=mx+b that makes a graph that is a straight line
Term
quadratic equation
Definition
an equation that makes a graph that is a parabola
Term
expression
Definition
a combination of symbols, numbers, and operations, with NO equals sign
Term
equation
Definition
a combination of symbols, numbers, and operations (+ -, etc) including an equals sign
Term
variable
Definition
a letter that stands for a quantity you don't know
Term
system of equations
Definition
two or more equations in a set
Term
factor
Definition
(x + 3), for example
Term
binomial
Definition
an expression with two terms (example: x + 3)
Term
factoring
Definition
finding the lengthxwidth (the booty problem)
Term
reciprocal
Definition
the fraction flipped over (3/2 is the ________ of 2/3)
Term
equivalent
Definition
a fancy word for equal to
Term
multiplicative inverse
Definition
another word for reciprocal
Term
solution
Definition
a number that makes the equation work
Term
counterexample
Definition
an example that shows that your argument doesn't work
Term
evaluate
Definition
to plug in the numbers you are given and simplify as much as possible
Term
simplify
Definition
to combine like terms and eliminate zeros
Term
y-intercept
Definition
where the line crosses the y-axis
Term
x-intercept
Definition
where the line crosses the x-axis
Term
vertex
Definition
the highest or lowest point on a parabola
Term
parabola
Definition
an arch
Term
line of symmetry
Definition
where you can fold the picture so the two sides match each other perfectly
Term
sum
Definition
the answer to an addition problem
Term
product
Definition
the answer to a multiplication problem
Term
point of intersection
Definition
where two lines cross
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