47 terms

# Zab Algebra I Final Exam

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angle of depression
angle from horizontal down to line of sight
angle of elevation
angle of horizontil up to line of sight
apothem
line segment from the center to the midpoint of one of its sides
asymtope
a line that a graph approaches but never reaches
axis of symmetry
A vertical line that divides the parabola in 2 halfs
binomial
a polynomial with two terms - the sum of two monomials
conditional
any sentence writen in if-then form
conjugates
the sum and the difference of the same two terms
constant of variation
The nonzero constant k in the function y = kx.
converse
switch the hypothesis and the conclusion
cosine
adajecnt divided by hypotenuse
degree of a monomial
The sum of the exponents of the variables of a monomial.
degree of a polynomial
The degree of the term with the greatest exponent for a polynomial in one variable.
extraneous solution
a solution to an equation that does not satisfy the original equation
hexagon
six-sided figure
hypotenuse
side opposite of the right angle (longest side of a right triangle)
inverse variation
y = k / x or xy = k
leg
the sides adjacent/beside the right angle
like radicals
radicals with the same radicand
midpoint
point half way between the two end points
Formula = x one plus x two divided by 2 , y one plus y two divided by 2
parabola
the graph of a quadratic formula that is in the shape of a U
parallelogram
is a quadrilateral with TWO pairs of parallel sides
perfect squares
squares of the integers
perfect - square trinomial
for every real number a and b --> a^2 + 2ab + b = (a+b)^2
polynomial
The sum or difference of two or more monomials
principle square root
positive square root
Example - square root of 16 = 4
quadratic equation
x = -b plus or mius the square root of b^2 - 4ac divided by 2a
quadratic function
ax^2 + bx + c = y
radical equation
an equation with a variable in the radicand
Example = (square root of x) - 3 = 4
radicand
expression inside the radical sign
radius of a polygon
distance from the center to the vertex - hypotenuse
rational equation
equation that contains one or more rational expressions
rational expression
a fraction with a variable in the top and bottom
rational function
a function with at least x in the denominator
rationalize the denominator
you multiply the numerator and the denominator by the same radical expression
rectangle
any quadrilateral with four right angles
rhombus
quadrilateral whose four sides all have the same length
sine
opposite / hypotenuse
square
quadrilateral that has four sides that are all the same length and four right angles
square root
the number a is the square root of b is a = b
square root function
function with the independent variable under the square root symbol
Example - y = x
standard form of a polynomial
exponents go down according to the power
tangent
opposite / adjacent
trapezoid
a quadrilateral with one pair of parallel sides
trigonometric ratios
ratio of sides of a right triangle
trinomial
polynomial consisting of 3 term
vertex of a parabola
highest of lowest point of the parabola