Relations and Functions
Domains are represented by what letter?
Domains are represented by the letter x.
Solve the function
f(x)=12x-4+14x2
f(x)=572
What is translation?
Shifting points in the same direction.
What does the variable "d" represent in recursive and explicit formula?
Common Difference
These relations are....
a)positive association
b)positive correlation
(1,9)(2,15.3)(3,21.6)(4,27.9)
b)positive correlation
What is a relation?
A relation is a set of ordered points (x,y)
Solve the function
g(x)=x+14x-12+x2-237
x=12
g(x)=75
If a line is shifting to the left it is.....
(Increasing or Decreasing)
Increasing
Write the recursive formula
an=an-1+d
Write the equation of the trend line
(1,12) (2,24) (3,36) (4,48)
f(x)=12x
True or False
A discrete relation includes all real numbers, and can have lines or curves when being plotted
False
A discrete relation only uses whole numbers and uses a set of data points.
Solve this equation
h(x)=16x-4+x2*x+7
h(x)= 12
h(x)=1,923
What is g(x) when x equals 12
g(x)=13x+2x2-12
g(x)=432
Which formula is shown below?
an=a1+(n-1)d
Explicit Formula
Write the equation of the trend line
(1,13)(2,19.8)(3,26.6)(4,33.4)
f(x)=6.8x+6.2
What kind of relations is set up where no two domains have the same range.
One-to-one
What is the answer of f(x)= 5
f(x)=x2-12x-36
f(x)=-71
Write the equation for the trend line
(1,4)(2,9.3)(3,14.6)(4,19.9)
y=-5.3y-1.3
Change the formula
an=an-1+6
a1=13
an=7+6n
True or False
Correlations are represented in a line
True
What object represents your x value in this scenario?
John needed to get a taxi to drive him into the city. Before the ride there is a flat fee of $3, then it is $0.50 per mile.
The x value is represented by how much money you are charged
What form do you use when writing a linear function rule?
Slope-Intercept Form
Write an equation of the trend line
(1,-3)(2,-8.7)(3,-14.4)(4,-20.1)
y=5.7x-2.7
Change the formula
an=9+(n-1)7
an=2+7n
Is this an example of a negative correlation or association?
negative correlation