y=mx+b
linear function
y=IxI
linear absolute function
y= ax
exponential function
y=a2+bx+c
quadratic function
straight line across graph
linear function
v shape on graph
linear absolute function
half curve across graph
exponential function
u shape on graph
quadratic function
f(x)=x
constant function
shape of line changing over time
constant function
arithmetic recursive formula
an =an-1 times r
geometric recursive formula
gn= gn-1 times r
arithmetic explicit formula
an=a1+d(n-1)
geometric explicit formula
gn=gn times rn-1
what is r is sequence equations?
r is common ratio or difference. how much the sequence changes
what is n in a sequence equation?
n is the number or the term
what is a or g in a sequence equation?
The first term of the sequence
when rounding to nearest whole number what do you change if theres a decimal?
If the decimal is over 5 you go up one if its under 5 you just take it away
what is the domain of a sequence?
positive or neg #'s
when do you use a closed circle on the number line?
when the number is less /greater then or equal to then x
when do you use a open circle on the number line?
when the number is less or greater then x
how do you describe a graph?
write if its increasing and or decreasing what type of function its shape if its discrete or continuous
what is a discrete graph?
each input only has on output is a function and points are not connected
what is a continuous graph?
starts at one specific point points are connected (if its not discrete )
what is correlation
relationship or connection between two or more things
what is causlation
the action of causing something
when do you keep awnser as a simplified fraction?
when the answer has a decimal in y int. or compound inequality problems.
when do you use or?
when "paths" are going opposite ways and don't overlap.
when do you use and?
when there's a line between both points connecting them or they overlap.
when do you flip sign around?
when dividing by a neg #
whats the easiest way to find y int?
ignore x then solve
what is no solution?
no x false statment
what is one solution
x = #
what is infinite solution
x goes away true statement