1st Semester Review Vocab Terms Flashcards
M of the nonvertical line through (x1,y1) and (x2, y2) is m=y2-y1/x2-x1=change in y/ change in x, where x’s do NOT equal each other
Slope
When slope is undefined the line is….
vertical
When slope is 0 the line is….
horizontal
y-y1=m(x-x1), equation of line that passes through point (x,y) and has a slope of m.
Point Slope Form
an x, or vice versa that is inside the given information.
Linear Interpolation
When you must predict an x value based on y or vice versa, that is not inside the data
Linear Extrapolation
graph of the equation y=mx+b, is a line whose slope is m and whose y intercept is (o,b)
Slope-Intercept Form
Ax+By+C=0
General Form
x=a
vertical line
y=b
horizontal line
Two distiinct nonvertical lines when their slopes are equal, m1=m2
Parallel
Two nonvertical lines thats two slopes are negative reciprocals of each other. That is, (m1)=(-1/m2)
Perpendicular
two quantities that are related to each other by some rule of correspondance
Relation
relation that assigns to each element x in the set A exactly one element y in the set B.
Function
The set A, or set of inputs of the function f
Domain
The set B, or set of outputs for the function f
Range
x-value, set A,
input
y-value, set B
output
in y=x^2, x is the _____________ variable
Independent Variables
in y+x^2, y is the___________ variable
Dependent Variable
having input (x) and an output of f(x)
Function Notation
set of all real numbers for which the expression is defined (found on denominator)
Implied Domain
f(x+h)-f(x)/h where h does not equal zero
Difference Quotient
is the collection of ordered pairs (x,f(x)), such that x is in the domain of f. (visual)
Graph of a Function
at most one y-value corresponds to a given x-value. It then follows the vertical line can intersect the graph of a function at most once. Set of points of coordinates plane is the graph of y as a function of x if and only if no vertical line intersects the graph at mroe than one point.
Vertical line test
A function f is __________ on an intercal when for any x1 and x2 in the interval x1<f(x2)
Increasing
a function is ________ on an intercal when, for any x1 and x2 in the interval x1f(x2)
Decreasing
a function is _________ on an interval when, for any x1 and x2 in the interval f(x1)=f(x2)
Constant
function value f is called _______ of f when there exists an intercal (x1,x2) that contains a such that x1< or equal to f(x).
Relative Minimum
function value f is called the __________ of f when there exists an interval (x1,x2) that contains a such that x1 or equal to f(x)
Relative Maximum
greatest integer function is an example of a ________ function, whose graph resembles a set of stairsteps.
Step Function
a function whose graph is symmetric with resepect to the y-axis is a _______ function. for each x in the domain of f, f(-x)=f(x)
Even
a function whose graph is symmetric with respect to the origin is an ________ function. for each x in the domain of f,f(-x)= -f(x)
Odd
h(x)=f(x)+c
Vertical Shift Upward
h(x)=f(x)-c
Vertical Shift Downward
h(x)=f(x-c)
Horizontal Shift to the right
h(x)=f(x+c)
Horizontal Shift to the left
h(x)=-f(x)
Reflection over the x-axis
h(x)=f(-x)
Reflection over the y-axis
Horizontal Shifts, Vertical Shifts, and Reflections are called______________. Because the shape of the graph remains unchanged.
Rigid Transformations
cause a distortion, stretches and shrink are _________ transformations
Nonrigid Transformations
g(x)=cf(x), when c>1
Vertical Stretch
g(x)=cf(x), when 0<1
Vertical Shrink
h(x)=f(cx) when c>1
Horizontal Shrink
h(x)=f(cx) when 0<1
Horizontal Stretch