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Algebra II Final Exam Review Spring '09 (LAST YEARS REVIEW)

Terms in this set (30)

asymptote
A line which a graph never crosses.
base of an exponential expression or function
b in the function y=a
common logarithm
a logarithm to the base 10
complex conjugates
a+bi, a−bi
direct variation
y=kx
discontinunity
a break in a graph
discriminant
b^2-4ac
exponent
2.5(10^x)=5
exponential equation
x in the function y=a⋅b^x
exponential function
y = a⋅b^x, where a is a nonzero constant, b is great than 0 and not equal to 1, and x is a real number
extraneous solution
A solution which does not satisfy the original equation.
General form of a quaddratic function
y=ax^2+bx+c
Inverse function
A relation formed by reversing x and y in a function.
linear combination
Method of solving a system of equations where first you multiply then add to eliminate a variable.
Mathematical modeling
use of a function to describe the world.
Matrix
any array of numbers in rows and columns.
Maximum value of a quadratic function
greatest y value which occurs when a<0
Minimum value of a quadratic funcation
least y value which occurs when a>0
Parabola
graph of quadratic function
Particular equation
equation where particular values are substituted for variables
Point-slope form of a linear equation
y-y₁=m(x-x₁)
Quadratic formula
x= -b±√b²-4ac/2a
Rational function
a function which is the ratio of 2 polynomials
Radical function
a function which contains a variable as the radicand
Removable discontinuity
a "hole" in a graph
Slope-intercept form of a linear equation
y=mx+b, m does not equal 0
System of equations
2x+y=1, 2x-y=3
Vertex form of a quadratic function
y-k=a(x-h)²
y=x symmetry
characteristic of afunction and its inverse
zero of a function
a value of x that makes the function's value zero
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