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Algebra 2
Finals Study
22
Mathematics
10th Grade
01/11/2011
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Term
|ax+b|=c
 Definition
|ax+b|=c, |ax+b|=-c
Term
how do you find if something is a function?
 Definition
vertical line test
each input has only one output
Term
|ax+b|
 Definition
-c
Term
|ax+b|>c
 Definition
ax+b>c or ax+b<-c
Term
slope formula
 Definition
y2-y1/x2-x1
Term
to find x intercept
 Definition
set y to zero
Term
to find y intercept
 Definition
set x to zero
Term
vertex of y=a|x-h|+k
 Definition
(h,k)
Term
point slope form
 Definition
y-y1=m(x-x1)
Term
parallel lines
 Definition
have the same slope
Term
piecewise function
 Definition
make t-tables starting with what x is > or < or = to. Plug in that number for x and see what you get for y.
Term
solution to system by graphing
 Definition
point where both lines meet
Term
substitution
 Definition
solve for x; plug solution in to second equation in the x spot; solve; plug y value in to equation to get x.
Term
elimination
 Definition
cancel out one variable
Term
vertex form
 Definition
y=(x-h)^2 +k
Term
solve by factoring
 Definition
break in to parentheses
set equal to zero
Term
i^2
 Definition
-1
Term
a^m*a^n
 Definition
a^m+n
Term
(a^m)^n
 Definition
a^m*n
Term
a^-m
 Definition
1/a^m
Term
a^m/a^n
 Definition
a^m-n
Term
synthetic division
 Definition
(x-r); r goes in the box
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