Vocab
What is a function?
Where you can input values and get outputs. Each input has one output.
What is a linear function?
A function that has a constant rate of change that increases in step like increments. The inputs and outputs of the function create a line.
x+18=8(2x-6)-9x
X^2+6x+9=0
(x+3)(x+3)
A
What are the three types of functions we have learned about this year?
Linear, exponential, and quadratic.
How can I tell if a function is linear, exponential, or quadratic by looking at the graph?
Linear is a line
Exponential is a curvy l or j
Quadratic is a u or n
f(x)=2^x-3
Find f(-3)
2 and 7/8
Find the roots of x^2-4x+4=0.
x=2
18 #11
y<-3
y>=2/3x-5
Define the following terms:
Binomial, Trinomial, Quadratic, Cubic, and Polynomial.
Binomial two terms
Trinomial 3 terms
Quadratic exponent of 2
Cubic exponent of 3
Polynomial 4 or more terms
What type of function is an arithmetic sequence related to?
Linear
18 #16
(-4,7) or (2,-5)
4x^3y^4+16xy^3z
4xy^3(x^2y+4z)
18 #19 what is the slope?
$15
What is the difference between an exponential function and a linear function?
Exponential function has a pattern that is multiplying or dividing and a linear function has a pattern that is adding or subtracting.
What type of function is a geometric sequence related to?
Exponential
18 #13
480t=300t+900
9x^2+12x+4
(3x+2)(3x+2)
x=-2/3
18 #5 find the line of regression.
y=2.89x+39.14
What is domain and range for a table and for a graph? How are they written for each?
Domain and range for a table is a list of the x and y values. You use braces and commas.
Domain and range for a graph is an interval of your lowest and highest x values and y values using parentheses and/or brackets.
Linear y=mx+b
exponential y=a(b)^x
Quadratic y=ax^2+bx+c
18 #17
B
18 #18
x=-2,1
If f(x)=2^x and g(x)=2x when is f(x)>g(x)?
x>2